Question

Consider the following function of variable r, for r≥0:y(r)=(r^2− 4.00r)exp(−r).
Find the value of the first derivative, dy/dr, at r=4.00.
Find the value of the second derivative, d^2 y/dr^2, at r=4.00.
Find the value of r where y takes its minimum value in the r≥0 interval.
Find the value of r where y takes its maximum value in the r≥0 interval.