Question

Find the derivative of f(x)=x/(x^2+1)

Answer 1

This is a quotient rule so if you remember dy/dx f(x)/g(x) = [g(x)f'(x)-f(x)g'(x)]/g(x)^2 you should get [1-x^2]/(x^2+1)^2

Answer 2

Good! That is what I got.