A.
The equation of the normal to the curve y4 = ax3 at (a, a) is
x + 2y = 3a
3x - 4y + a = 0
4x + 3y = 7a
4x - 3y = 0
If m and M respectively denote the minimum and maximum of f(x) = (x - 1)2 + 3 for x [- 3, 1], then the ordered pair (m, M) is equal to
(- 3, 19)
(3, 19)
(- 19, 3)
(- 19, - 3)