Skip to main content
ptc-66357621-Visitor
1-Visitor
Sep 15, 2014 4:06 PM UTC
Solved

Solve for a variable in an equation symbolically

Hello Everyone,

I am new to MathCAD so forgive me if this is a basic question:

If you have an equation, let's say "a*b*c = d*e" where "a","b","c","d","e" are all variables and you want to symbolically solve "a", can MathCAD do this?

Cheers,

Jeff

RichardJAnswer
19-Tanzanite
Sep 15, 2014 6:20 PM UTC

Ignore the red. it's just the numeric processor complaining. The symbolic procesor doesn't care if a variable is undefined.

Type a*b*c=d*e. Note the bold equals, which you get with <Ctrl>=. Click on "solve" on the symbolic toolbar, type ,a. You will see the result. You may get some strange numbers in the result. If you do, it's because the symbolic processor is seeing c as the speed of light. You can fix this by typing c:c (which will display as c:=c) above the expression.

View in thread

3 replies

MoeSzyslak12-Amethyst
12-Amethyst
Sep 15, 2014 5:04 PM UTC

Just check out the symbolic toolbar.

Capture.PNG

Translate
ptc-66357621-VisitorAuthor
1-Visitor
Sep 15, 2014 5:49 PM UTC

I tried to enter what you have but "a","b","c" are highlighted red and I can't enter that space in between "solve" and "e". I want MathCAD to give me a->d*e/(b*c).

Thanks,

Jeff

Translate
RichardJ19-TanzaniteAnswer
19-Tanzanite
Sep 15, 2014 6:20 PM UTC

Ignore the red. it's just the numeric processor complaining. The symbolic procesor doesn't care if a variable is undefined.

Type a*b*c=d*e. Note the bold equals, which you get with <Ctrl>=. Click on "solve" on the symbolic toolbar, type ,a. You will see the result. You may get some strange numbers in the result. If you do, it's because the symbolic processor is seeing c as the speed of light. You can fix this by typing c:c (which will display as c:=c) above the expression.

Translate
Terms & ConditionsAccessibility statement