Question

How do you find the derivative of `f(x)= 2/x`?

Answer 1

`f'(x)=-2/x^2`.

Explanation:

We can use the power rule to differentiate this function, and the fact that `d/dxcf(x)=cd/dxf(x)`. So

`f'(x)=2d/dx(1/x)=2(-1/x^2)=-2/x^2`.