In points a (2,1), B (- 3,4), C (1,12), D (3,8), e (24,1 / 2), there are

In points a (2,1), B (- 3,4), C (1,12), D (3,8), e (24,1 / 2), there are

quadrature
A: 1 times 2 = 2
b: - 3 times 4 = - 12
c: 1 times 12 = 12
d: 3 times 8 = 24
e: 24 times 1 / 2 = 12
The product of C and E is the same
Fixed on the same function