Question

How can I find the derivative of the following function?

Answer 1

whats the equation

Answer 2

Is your function this: y = ( x^2 - 1) / (x^2 + 1)

Although I cannot read what you posted as your work, did you not get the correct answer when you worked the problem on your paper?

Answer 3

y = ( x^2 - 1) / (x^2 + 1)

y' = (x^2 + 1)* (2x) - (x^2 -1)*(2x)
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(x^2 + 1)^2

y' = 4x
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(x^2 + 1)^2