now you do the same for V(1) and then solve for a and b
I feel stupid: six years of high-school math and I still can't solve this problem.
Hopefully, there is someone on this forum who can!
Let V(p) = ap2+ bp + c
V(0) = 0 and V(1) = 0.
Work out (without a calculator) the values of a, b and c.