Question

If (below), then f'(x) = ? (A) 3 (B) 1 (C) -1 (D) -3 (E) -5

`f(x)=(-x^4+x^2+1)/x`

Answer 1

None of these. `f'(x) = -3x^2+1-1/x^2`

Explanation:

`f(x) = (-x^4+x^2+1)/x = -x^3+x+1/x`

`f'(x) = -3x^2+1-1/x^2`