Solve an equation as a fraqtion. Is it possible?

11022018, 08:42 AM
(This post was last modified: 11022018 08:44 AM by blevita.)
Post: #1




Solve an equation as a fraqtion. Is it possible?
Hi
I would like to solve a simple equation to two variables. This is obvious a very simple task for the attached example but as you could imagine, i would like to do the same with much more complex equations. So my question is, is it possible to solve such an equation to a fraqtion which consists of two variables? I have tried with solve(...,[x/b]) but i got only an empty result. If the prime is not able to do so, is there any othe tool out there who can do such a algebraic operation? Thanks 

11022018, 10:40 AM
Post: #2




RE: Solve an equation as a fraqtion. Is it possible?  
11022018, 11:33 AM
Post: #3




RE: Solve an equation as a fraqtion. Is it possible?
(11022018 08:42 AM)blevita Wrote: Hi Hi, you have to use the CAS ambient in order to do that Best, Aries 

11022018, 04:24 PM
Post: #4




RE: Solve an equation as a fraqtion. Is it possible?
Thanks for your answers.
But its not what i have searched for ^^. The problem is, that in my case, the "a"part is not that simple. I think i must give you the real example. This is my equation: ((r1*r3*u2+r2*r3*u1)/(c2*p*r1*r2*r3+r1*r2+r1*r3+r2*r3)) = (u2*p*c1*r3) I want to know what u2/u1 is. Therefore i have tried to do this: solve(((r1*r3*u2+r2*r3*u1)/(c2*p*r1*r2*r3+r1*r2+r1*r3+r2*r3)) = (u2*p*c1*r3),[u2/u1]) but it does not work 

11022018, 05:31 PM
Post: #5




RE: Solve an equation as a fraqtion. Is it possible?
(11022018 04:24 PM)blevita Wrote: Thanks for your answers. I got it … I think the argument has to be a variable name … Best, Aries 

11022018, 09:08 PM
(This post was last modified: 11022018 09:21 PM by rushfan.)
Post: #6




RE: Solve an equation as a fraqtion. Is it possible?
(11022018 04:24 PM)blevita Wrote: Thanks for your answers. Try: Code: solve(((r1*r3*u2+r2*r3*u1)/(c2*p*r1*r2*r3+r1*r2+r1*r3+r2*r3)) = (u2*p*c1*r3), u2) 

11022018, 10:09 PM
Post: #7




RE: Solve an equation as a fraqtion. Is it possible?
(11022018 04:24 PM)blevita Wrote: Thanks for your answers. Replace u2 with u1*x and solve for x. — Ian Abbott 

11022018, 10:32 PM
Post: #8




RE: Solve an equation as a fraqtion. Is it possible?
Thank you very much!
I think i got it I love the HPForum. And i love my HPCalc. He is much better than my old TINSpire. ^^ 

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