Question 30
The graph of $f^{\prime}(x)$ for a differentiable function $f:\mathbb R\to\mathbb R$ is shown, with straight pieces through B(−1,0), A(1,1), C(3,0). Find $f(4)-f(0)$.

Source defect: the labelled graph gives 3/2, absent from the choices. Enter the numerical answer. Printed choices: A 1; B 2; C 3; D 4; E 5.

Source defect: the labelled graph gives 3/2, absent from the choices. Enter the numerical answer. Printed choices: A 1; B 2; C 3; D 4; E 5.