 Solve an equation as a fraqtion. Is it possible? - Printable Version +- HP Forums (https://www.hpmuseum.org/forum) +-- Forum: HP Calculators (and very old HP Computers) (/forum-3.html) +--- Forum: HP Prime (/forum-5.html) +--- Thread: Solve an equation as a fraqtion. Is it possible? (/thread-11726.html) Solve an equation as a fraqtion. Is it possible? - blevita - 11-02-2018 08:42 AM 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 RE: Solve an equation as a fraqtion. Is it possible? - ndzied1 - 11-02-2018 10:40 AM The CAS is where you would do this [attachment=6545] RE: Solve an equation as a fraqtion. Is it possible? - Aries - 11-02-2018 11:33 AM (11-02-2018 08:42 AM)blevita Wrote:  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 Hi, you have to use the CAS ambient in order to do that Best, Aries RE: Solve an equation as a fraqtion. Is it possible? - blevita - 11-02-2018 04:24 PM 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 RE: Solve an equation as a fraqtion. Is it possible? - Aries - 11-02-2018 05:31 PM (11-02-2018 04:24 PM)blevita Wrote:  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 I got it … I think the argument has to be a variable name … Best, Aries RE: Solve an equation as a fraqtion. Is it possible? - rushfan - 11-02-2018 09:08 PM (11-02-2018 04:24 PM)blevita Wrote:  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 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) Ans/u1 simplify(Ans)``` RE: Solve an equation as a fraqtion. Is it possible? - ijabbott - 11-02-2018 10:09 PM (11-02-2018 04:24 PM)blevita Wrote:  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 Replace u2 with u1*x and solve for x. RE: Solve an equation as a fraqtion. Is it possible? - blevita - 11-02-2018 10:32 PM Thank you very much! I think i got it I love the HP-Forum. And i love my HP-Calc. He is much better than my old TI-NSpire. ^^