Author 
Comment/Response 
Kevin Melville

02/03/12 09:49am
I am working on a function with three variables (x,y,z)=(X*Y)^0.5(Y*Z)^1.5, currently z=1, I first have taken the derivative of this function with respect to Y, set the derivative equal to zero and solved for Y, which returned (Y>0.3333(X)^0.5)(Y>0.333(X)^0.5). I now want to take the positive answer (Y>0.3333(X)^0.5) and use it to solve this problem, 100*Y + 100*(Y150)=20,000 for x. I am wondering if there is a way to do this without having to retype my previous answer for Y. The reason I want to this is so that I can vary z and have the system give me the different answers without having to retype every time. Any help would be great, thank you!
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