function - Dependence of variables in Mathematica 7.0

Question

How can i get from equation one variable as a function of other variables? For example we have A*x^2 + R1*V*x + R2*v + z = 0; and i must get result V(R1,R2) = -(A*x^2 + z)/ (R1*x+R2). This is ofcourse simple example.

Answer 1

调查Solve和Reduce。当然，这是一个简单的答案，但应该可以帮助您入门。