Variable use between CAS and Home.
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09-15-2017, 05:02 PM
(This post was last modified: 10-15-2017 12:18 PM by Rudi.)
Post: #21
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RE: Variable use between CAS and Home.
I have compiled two sheets showing the transfer between the CAS View and the Home View. From the CAS-View to the Home-View I wrote the user function upperVar(). It is applicable up to 3-dimensional space. The function converts the CAS function (eg x -> X, y -> Y, z -> Z) to use in the app function (variable F1 ..F9, F0) or to use for the app Advanced Graphing (variable V1 .. V9,V0).
Code: #cas // upperVar v1.1 // by Rudi Steeger upperVar(f):= BEGIN LOCAL a,b,c; a:=lname(f); b:=SIZE(a); IF b>3 THEN RETURN("Error:One or two variables permissible") END; IF b<1 THEN RETURN("Error:Function contains equations or no CAS-Variables") END; // replace one variable with X //RETURN lname(subst(exact(f),(a) = (['X']))); IF b=1 THEN RETURN subst(exact(f),(a) = (['X'])); END; // replace two variable with X, Y IF b=2 THEN RETURN subst(exact(f),(a) = (['X','Y'])); END; // replace three variable with X , Y, Z IF b=3 THEN RETURN subst(exact(f),(a) = (['X','Y','Z'])); END; END; #end Best Regards Rudi |
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