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[mathcad] symbolic calculation question
Author: Marc Artzrouni    Posted: Thu, 18 Jun 2009 10:31:08 +0200
If I integrate symbolically ax+b in the variable x, MathCad 10 will give me ax^2/2 + b, but with the numerical values that have been GLOBALLY assigned to a and b in place of a and b - whereas I really want the fully symbolic result ax^2/2 + b (there is no problem if a and b are assigned in the "normal", local way := ) - The inelegant solution I found was to paste the ax+b into an empty sheet for which numerical values of a and b are not given and I get the right symbolic result which I then paste back into my original sheet - that's awkward and I don't rember that being a problem with previous versions of MC - If there is an option, a way to fully integrate symbolically, ignoring globally assigned numerical values, I would be most grateful to hear it - Marc -- Marc Artzrouni, Professor Department of Mathematics (CNRS 5142) University of Pau - BP 1155 64013 Pau Cedex FRANCE Home page: http://www.univ-pau.fr/~artzroun/ ********************************** tel: + 33 - (0)5 59 40 75 50 fax: + 33 - (0)5 59 40 75 55 e-mail: /> Skype: marc.artzrouni ********************************** --- The Mathcad List - Discussion, Support & News Contributions: /> Hosted by: Adept Scientific http://www.adeptscience.com List Archive: http://lists.adeptscience.co.uk/ --- Would you like this to come to a different email address? --- Simply leave the mailing list (see below) and re-join by sending a blank email from the new address to: or --- You are currently subscribed to mathcad as: /> To unsubscribe send a blank email to />

RE: [mathcad] symbolic calculation question
Author: Dumke, Bill    Posted: Thu, 18 Jun 2009 08:11:32 -0500
Marc, I have given up on inserting a symbolic derivation inside other calculations. Even if you undefine the variables, you may have to redefine them later, which can get to be very messy. So I insert any simple symbolic derivations at the very beginning of the Mathcad worksheet, before I even define any units. Then I don't have to worry about it. When I need a symbolic relation to use in the calculations I just copy it in from the beginning of the worksheet. If I need a lot of symbolic work done, I do it in a separate worksheet and name it as being symbolic, then copy the result(s) in when I need them. Bill Bill Dumke, RF Engineer Nsight Telservices dba Cellcom 450 Security Blvd Green Bay, WI 54313 Office: 920 617-7311 e-mail: -----Original Message----- From: Marc Artzrouni Sent: Thursday, June 18, 2009 3:31 AM To: /> Subject: [mathcad] symbolic calculation question If I integrate symbolically ax+b in the variable x, MathCad 10 will give me ax^2/2 + b, but with the numerical values that have been GLOBALLY assigned to a and b in place of a and b - whereas I really want the fully symbolic result ax^2/2 + b (there is no problem if a and b are assigned in the "normal", local way := ) - The inelegant solution I found was to paste the ax+b into an empty sheet for which numerical values of a and b are not given and I get the right symbolic result which I then paste back into my original sheet - that's awkward and I don't rember that being a problem with previous versions of MC - If there is an option, a way to fully integrate symbolically, ignoring globally assigned numerical values, I would be most grateful to hear it - Marc -- Marc Artzrouni, Professor Department of Mathematics (CNRS 5142) University of Pau - BP 1155 64013 Pau Cedex FRANCE Home page: http://www.univ-pau.fr/~artzroun/ ********************************** tel: + 33 - (0)5 59 40 75 50 fax: + 33 - (0)5 59 40 75 55 e-mail: /> Skype: marc.artzrouni ********************************** --- The Mathcad List - Discussion, Support & News Contributions: /> Hosted by: Adept Scientific http://www.adeptscience.com List Archive: http://lists.adeptscience.co.uk/ --- Would you like this to come to a different email address? --- Simply leave the mailing list (see below) and re-join by sending a blank email from the new address to: or --- You are currently subscribed to mathcad as: /> To unsubscribe send a blank email to /> --- The Mathcad List - Discussion, Support & News Contributions: /> Hosted by: Adept Scientific http://www.adeptscience.com List Archive: http://lists.adeptscience.co.uk/ --- Would you like this to come to a different email address? --- Simply leave the mailing list (see below) and re-join by sending a blank email from the new address to: or --- You are currently subscribed to mathcad as: /> To unsubscribe send a blank email to />

Re: [mathcad] symbolic calculation question
Author: Radovan Omorjan    Posted: Thu, 18 Jun 2009 15:29:06 -0700
Hallo Marc, Please look at the screenshot (Mathcad 11). BTW, what is Mathcad 10?. Is this what you wanted? Regards, Radovan Marc Artzrouni wrote: > If I integrate symbolically ax+b in the variable x, MathCad 10 will > give me > ax^2/2 + b, but with the numerical values that have been GLOBALLY > assigned to a and b in place of a and b - > whereas I really want the fully symbolic result ax^2/2 + b (there is > no problem if a and b are assigned in the "normal", local way := ) > - The inelegant solution I found was to paste the > ax+b into an empty sheet for which numerical values of a and b are not > given and I get the right symbolic result > which I then paste back into my original sheet - that's awkward and I > don't rember that being a problem with previous versions > of MC - If there is an option, a way to fully integrate > symbolically, ignoring globally assigned numerical values, I would be > most > grateful to hear it - > Marc > > > --- The Mathcad List - Discussion, Support & News Contributions: /> Hosted by: Adept Scientific http://www.adeptscience.com List Archive: http://lists.adeptscience.co.uk/ --- Would you like this to come to a different email address? --- Simply leave the mailing list (see below) and re-join by sending a blank email from the new address to: or --- You are currently subscribed to mathcad as: /> To unsubscribe send a blank email to
Attachments:  integrate.png

Re: [mathcad] symbolic calculation question
Author: Radovan Omorjan    Posted: Thu, 18 Jun 2009 15:48:04 -0700
Yes Bill, you are quite right. Defining and undefining variables might make a real mess. Should be avoided. Regards, Radovan Dumke, Bill wrote: >Marc, > >I have given up on inserting a symbolic derivation inside other >calculations. Even if you undefine the variables, you may have to >redefine them later, which can get to be very messy. So I insert any >simple symbolic derivations at the very beginning of the Mathcad >worksheet, before I even define any units. Then I don't have to worry >about it. When I need a symbolic relation to use in the calculations I >just copy it in from the beginning of the worksheet. If I need a lot of >symbolic work done, I do it in a separate worksheet and name it as being >symbolic, then copy the result(s) in when I need them. > >Bill > > >Bill Dumke, RF Engineer >Nsight Telservices dba Cellcom >450 Security Blvd >Green Bay, WI 54313 > >Office: 920 617-7311 >e-mail: >-----Original Message----- >From: Marc Artzrouni >Sent: Thursday, June 18, 2009 3:31 AM >To: /> >Subject: [mathcad] symbolic calculation question > >If I integrate symbolically ax+b in the variable x, MathCad 10 will >give me >ax^2/2 + b, but with the numerical values that have been GLOBALLY >assigned to a and b in place of a and b - whereas I really want the >fully symbolic result ax^2/2 + b (there is no >problem if a and b are assigned in the "normal", local way := ) > - The inelegant solution I found was to paste the >ax+b into an empty sheet for which numerical values of a and b are not >given and I get the right symbolic result which I then paste back into >my original sheet - that's awkward and I don't rember that being a >problem with previous versions >of MC - If there is an option, a way to fully integrate >symbolically, ignoring globally assigned numerical values, I would be >most grateful to hear it - Marc > > > > > --- The Mathcad List - Discussion, Support & News Contributions: /> Hosted by: Adept Scientific http://www.adeptscience.com List Archive: http://lists.adeptscience.co.uk/ --- Would you like this to come to a different email address? --- Simply leave the mailing list (see below) and re-join by sending a blank email from the new address to: or --- You are currently subscribed to mathcad as: /> To unsubscribe send a blank email to />

RE: [mathcad] symbolic calculation question
Author: Jean L J Rosenfeld    Posted: Thu, 18 Jun 2009 20:45:53 +0100
Or just use , say px+q instead of ax+b (assuming that you have not assigned values p and q). --------------------------------- Jean L.J. Rosenfeld Argoed Hall Argoed Hall Lane Mynydd Isa Mold, Flintshire CH7 6SQ Wales, UK Tel: +44 (0)1352 750566 Email: -----Original Message----- From: Marc Artzrouni Sent: 18 June 2009 09:31 To: /> Subject: [mathcad] symbolic calculation question If I integrate symbolically ax+b in the variable x, MathCad 10 will give me ax^2/2 + b, but with the numerical values that have been GLOBALLY assigned to a and b in place of a and b - whereas I really want the fully symbolic result ax^2/2 + b (there is no problem if a and b are assigned in the "normal", local way := ) - The inelegant solution I found was to paste the ax+b into an empty sheet for which numerical values of a and b are not given and I get the right symbolic result which I then paste back into my original sheet - that's awkward and I don't rember that being a problem with previous versions of MC - If there is an option, a way to fully integrate symbolically, ignoring globally assigned numerical values, I would be most grateful to hear it - Marc -- Marc Artzrouni, Professor Department of Mathematics (CNRS 5142) University of Pau - BP 1155 64013 Pau Cedex FRANCE Home page: http://www.univ-pau.fr/~artzroun/ ********************************** tel: + 33 - (0)5 59 40 75 50 fax: + 33 - (0)5 59 40 75 55 e-mail: /> Skype: marc.artzrouni ********************************** --- The Mathcad List - Discussion, Support & News Contributions: /> Hosted by: Adept Scientific http://www.adeptscience.com List Archive: http://lists.adeptscience.co.uk/ --- Would you like this to come to a different email address? --- Simply leave the mailing list (see below) and re-join by sending a blank email from the new address to: or --- You are currently subscribed to mathcad as: To unsubscribe send a blank email to /> --- The Mathcad List - Discussion, Support & News Contributions: /> Hosted by: Adept Scientific http://www.adeptscience.com List Archive: http://lists.adeptscience.co.uk/ --- Would you like this to come to a different email address? --- Simply leave the mailing list (see below) and re-join by sending a blank email from the new address to: or --- You are currently subscribed to mathcad as: /> To unsubscribe send a blank email to />

RE: [mathcad] symbolic calculation question
Author: Michel De Ro    Posted: Thu, 18 Jun 2009 17:28:14 +0200
Personally, I prefer to make symbolic calculation using slightly different variables: a_ instead of a, b_ instead of b, etc... When I copy the symbolic results into value calculations, I modify by hand the variables. Regards Michel De Ro MDRt SPRL Expertises ferroviaires. Railway Expertise 6 rue la Brasserie B 1350 Folx-les-Caves Belgique tél +32 81 87 86 46 mobile +32 477 59 86 36 /> www.mdrt.be > -----Message d'origine----- > De : Radovan Omorjan /> > Envoyé : 19 June 2009 00:48 > À : /> > Objet : Re: [mathcad] symbolic calculation question > > Yes Bill, you are quite right. Defining and undefining variables might > make a real mess. > Should be avoided. > > Regards, > Radovan > > Dumke, Bill wrote: > > >Marc, > > > >I have given up on inserting a symbolic derivation inside other > >calculations. Even if you undefine the variables, you may have to > >redefine them later, which can get to be very messy. So I insert any > >simple symbolic derivations at the very beginning of the Mathcad > >worksheet, before I even define any units. Then I don't have to worry > >about it. When I need a symbolic relation to use in the calculations > I > >just copy it in from the beginning of the worksheet. If I need a lot > of > >symbolic work done, I do it in a separate worksheet and name it as > being > >symbolic, then copy the result(s) in when I need them. > > > >Bill > > > > > >Bill Dumke, RF Engineer > >Nsight Telservices dba Cellcom > >450 Security Blvd > >Green Bay, WI 54313 > > > >Office: 920 617-7311 > >e-mail: /> > >-----Original Message----- > >From: Marc Artzrouni /> > >Sent: Thursday, June 18, 2009 3:31 AM > >To: /> > >Subject: [mathcad] symbolic calculation question > > > >If I integrate symbolically ax+b in the variable x, MathCad 10 will > >give me > >ax^2/2 + b, but with the numerical values that have been GLOBALLY > >assigned to a and b in place of a and b - whereas I really want the > >fully symbolic result ax^2/2 + b (there is no > >problem if a and b are assigned in the "normal", local way := ) > > - The inelegant solution I found was to paste the > >ax+b into an empty sheet for which numerical values of a and b are not > >given and I get the right symbolic result which I then paste back into > >my original sheet - that's awkward and I don't rember that being a > >problem with previous versions > >of MC - If there is an option, a way to fully integrate > >symbolically, ignoring globally assigned numerical values, I would be > >most grateful to hear it - Marc > > > > > > > > > > > > > --- > The Mathcad List - Discussion, Support & News > Contributions: /> > Hosted by: Adept Scientific http://www.adeptscience.com > List Archive: http://lists.adeptscience.co.uk/ > --- > Would you like this to come to a different email address? > --- > Simply leave the mailing list (see below) and re-join by > sending a blank email from the new address to: > or > --- > You are currently subscribed to mathcad as: /> > To unsubscribe send a blank email to leave-455346- > /> --- The Mathcad List - Discussion, Support & News Contributions: /> Hosted by: Adept Scientific http://www.adeptscience.com List Archive: http://lists.adeptscience.co.uk/ --- Would you like this to come to a different email address? --- Simply leave the mailing list (see below) and re-join by sending a blank email from the new address to: or --- You are currently subscribed to mathcad as: /> To unsubscribe send a blank email to />

Re: [mathcad] symbolic calculation question
Author: Tom Gutman    Posted: Thu, 18 Jun 2009 21:41:45 -0700
What is the actual Mathcad version you are using? Mathsoft never sold a product as Mathcad 10 -- what should have been MC10 (and is so labeled internally) was sold as MC 2001. Is that what you have? Just do the normal symbolic unassign for a and b (a:=a, b:=b). That works even if a and b were defined using the global assignment operator. Tom Gutman ----- Original Message ----- From: "Marc Artzrouni" /> To: /> Sent: Thursday, June 18, 2009 1:31 AM Subject: [mathcad] symbolic calculation question > If I integrate symbolically ax+b in the variable x, MathCad 10 > will > give me > ax^2/2 + b, but with the numerical values that have been GLOBALLY > assigned to a and b in place of a and b - > whereas I really want the fully symbolic result ax^2/2 + b (there > is no > problem if a and b are assigned in the "normal", local way := ) > - The inelegant solution I found was to paste the > ax+b into an empty sheet for which numerical values of a and b are > not > given and I get the right symbolic result > which I then paste back into my original sheet - that's awkward and > I > don't rember that being a problem with previous versions > of MC - If there is an option, a way to fully integrate > symbolically, ignoring globally assigned numerical values, I would > be most > grateful to hear it - > Marc > > > > -- > Marc Artzrouni, Professor > Department of Mathematics (CNRS 5142) > University of Pau - BP 1155 > 64013 Pau Cedex > FRANCE > > > > Home page: > http://www.univ-pau.fr/~artzroun/ > ********************************** > tel: + 33 - (0)5 59 40 75 50 > fax: + 33 - (0)5 59 40 75 55 > e-mail: /> > Skype: marc.artzrouni > ********************************** > > > --- > The Mathcad List - Discussion, Support & News > Contributions: /> > Hosted by: Adept Scientific http://www.adeptscience.com > List Archive: http://lists.adeptscience.co.uk/ > --- > Would you like this to come to a different email address? > --- > Simply leave the mailing list (see below) and re-join by > sending a blank email from the new address to: > or > --- > You are currently subscribed to mathcad as: > /> > To unsubscribe send a blank email to > --- The Mathcad List - Discussion, Support & News Contributions: /> Hosted by: Adept Scientific http://www.adeptscience.com List Archive: http://lists.adeptscience.co.uk/ --- Would you like this to come to a different email address? --- Simply leave the mailing list (see below) and re-join by sending a blank email from the new address to: or --- You are currently subscribed to mathcad as: /> To unsubscribe send a blank email to />

[mathcad] symbolic calculation question
Author: Marc Artzrouni    Posted: Wed, 24 Jun 2009 08:22:13 +0200
Tom Gutman wrote: >> What is the actual Mathcad version you are using? Mathsoft never sold >> a product as Mathcad 10 -- what should have been MC10 (and is so >> labeled internally) was sold as MC 2001. Is that what you have? >> >> Just do the normal symbolic unassign for a and b (a:=a, b:=b). That >> works even if a and b were defined using the global assignment >> operator. >> >> SORRY, it's MathCad 14 - Thanks for suggesting local "re-assignment" a:=a in order to have fully symbolic result - Marc Artzrouni ***************************************************************** >> Tom Gutman >> >> ----- Original Message ----- >> From: "Marc Artzrouni" /> >> To: /> >> Sent: Thursday, June 18, 2009 1:31 AM >> Subject: [mathcad] symbolic calculation question >> >> >> >>> If I integrate symbolically ax+b in the variable x, MathCad 10 >>> will >>> give me >>> ax^2/2 + b, but with the numerical values that have been GLOBALLY >>> assigned to a and b in place of a and b - >>> whereas I really want the fully symbolic result ax^2/2 + b (there >>> is no >>> problem if a and b are assigned in the "normal", local way := ) >>> - The inelegant solution I found was to paste the >>> ax+b into an empty sheet for which numerical values of a and b are >>> not >>> given and I get the right symbolic result >>> which I then paste back into my original sheet - that's awkward and >>> I >>> don't rember that being a problem with previous versions >>> of MC - If there is an option, a way to fully integrate >>> symbolically, ignoring globally assigned numerical values, I would >>> be most >>> grateful to hear it - >>> Marc >>> >>> >>> >>> -- >>> Marc Artzrouni, Professor >>> Department of Mathematics (CNRS 5142) >>> University of Pau - BP 1155 >>> 64013 Pau Cedex >>> FRANCE >>> >>> >>> >>> Home page: >>> http://www.univ-pau.fr/~artzroun/ >>> ********************************** >>> tel: + 33 - (0)5 59 40 75 50 >>> fax: + 33 - (0)5 59 40 75 55 >>> e-mail: /> >>> Skype: marc.artzrouni >>> ********************************** >>> >>> >>> --- >>> The Mathcad List - Discussion, Support & News >>> Contributions: /> >>> Hosted by: Adept Scientific http://www.adeptscience.com >>> List Archive: http://lists.adeptscience.co.uk/ >>> --- >>> Would you like this to come to a different email address? >>> --- >>> Simply leave the mailing list (see below) and re-join by >>> sending a blank email from the new address to: >>> or >>> --- >>> You are currently subscribed to mathcad as: >>> /> >>> To unsubscribe send a blank email to >>> >>> >> >> >> --- >> The Mathcad List - Discussion, Support & News >> Contributions: /> >> Hosted by: Adept Scientific http://www.adeptscience.com >> List Archive: http://lists.adeptscience.co.uk/ >> --- >> Would you like this to come to a different email address? >> --- >> Simply leave the mailing list (see below) and re-join by >> sending a blank email from the new address to: >> or >> --- >> You are currently subscribed to mathcad as: /> >> To unsubscribe send a blank email to /> >> >> > > --- > The Mathcad List - Discussion, Support & News > Contributions: /> > Hosted by: Adept Scientific http://www.adeptscience.com > List Archive: http://lists.adeptscience.co.uk/ > --- > Would you like this to come to a different email address? > --- > Simply leave the mailing list (see below) and re-join by > sending a blank email from the new address to: > or > --- > You are currently subscribed to mathcad as: /> > To unsubscribe send a blank email to > -- Marc Artzrouni, Professor Department of Mathematics (CNRS 5142) University of Pau - BP 1155 64013 Pau Cedex FRANCE Home page: http://www.univ-pau.fr/~artzroun/ ********************************** tel: + 33 - (0)5 59 40 75 50 fax: + 33 - (0)5 59 40 75 55 e-mail: /> Skype: marc.artzrouni ********************************** --- The Mathcad List - Discussion, Support & News Contributions: /> Hosted by: Adept Scientific http://www.adeptscience.com List Archive: http://lists.adeptscience.co.uk/ --- Would you like this to come to a different email address? --- Simply leave the mailing list (see below) and re-join by sending a blank email from the new address to: or --- You are currently subscribed to mathcad as: /> To unsubscribe send a blank email to />

Re: [mathcad] symbolic calculation question
Author: Frank Doyle    Posted: Tue, 23 Jun 2009 11:32:18 -0500
Hi Tom, I have MCAD13.1 installed. (Also have the 5 1/4 inch floppy) and several upgrades in-between. I remember reading this message, however, I do not recall asking / having a question about it. Sorry if I hit the "wrong" icon. Frank Tom Gutman wrote: > What is the actual Mathcad version you are using? Mathsoft never sold > a product as Mathcad 10 -- what should have been MC10 (and is so > labeled internally) was sold as MC 2001. Is that what you have? > > Just do the normal symbolic unassign for a and b (a:=a, b:=b). That > works even if a and b were defined using the global assignment > operator. > > Tom Gutman > > ----- Original Message ----- > From: "Marc Artzrouni" /> > To: /> > Sent: Thursday, June 18, 2009 1:31 AM > Subject: [mathcad] symbolic calculation question > > > >> If I integrate symbolically ax+b in the variable x, MathCad 10 >> will >> give me >> ax^2/2 + b, but with the numerical values that have been GLOBALLY >> assigned to a and b in place of a and b - >> whereas I really want the fully symbolic result ax^2/2 + b (there >> is no >> problem if a and b are assigned in the "normal", local way := ) >> - The inelegant solution I found was to paste the >> ax+b into an empty sheet for which numerical values of a and b are >> not >> given and I get the right symbolic result >> which I then paste back into my original sheet - that's awkward and >> I >> don't rember that being a problem with previous versions >> of MC - If there is an option, a way to fully integrate >> symbolically, ignoring globally assigned numerical values, I would >> be most >> grateful to hear it - >> Marc >> >> >> >> -- >> Marc Artzrouni, Professor >> Department of Mathematics (CNRS 5142) >> University of Pau - BP 1155 >> 64013 Pau Cedex >> FRANCE >> >> >> >> Home page: >> http://www.univ-pau.fr/~artzroun/ >> ********************************** >> tel: + 33 - (0)5 59 40 75 50 >> fax: + 33 - (0)5 59 40 75 55 >> e-mail: /> >> Skype: marc.artzrouni >> ********************************** >> >> >> --- >> The Mathcad List - Discussion, Support & News >> Contributions: /> >> Hosted by: Adept Scientific http://www.adeptscience.com >> List Archive: http://lists.adeptscience.co.uk/ >> --- >> Would you like this to come to a different email address? >> --- >> Simply leave the mailing list (see below) and re-join by >> sending a blank email from the new address to: >> or >> --- >> You are currently subscribed to mathcad as: >> /> >> To unsubscribe send a blank email to >> >> > > > --- > The Mathcad List - Discussion, Support & News > Contributions: /> > Hosted by: Adept Scientific http://www.adeptscience.com > List Archive: http://lists.adeptscience.co.uk/ > --- > Would you like this to come to a different email address? > --- > Simply leave the mailing list (see below) and re-join by > sending a blank email from the new address to: > or > --- > You are currently subscribed to mathcad as: /> > To unsubscribe send a blank email to /> > > --- The Mathcad List - Discussion, Support & News Contributions: /> Hosted by: Adept Scientific http://www.adeptscience.com List Archive: http://lists.adeptscience.co.uk/ --- Would you like this to come to a different email address? --- Simply leave the mailing list (see below) and re-join by sending a blank email from the new address to: or --- You are currently subscribed to mathcad as: /> To unsubscribe send a blank email to

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