Question

If y=x3+7x2-2x-9 then d2y/dx2 at x=-7/3 is

Answer 1

Answer:

0

Step-by-step explanation:

y=x3+7x2-2x-9

dy/dx = 3x2+14x-2

d2y/dx2 = 6x+14

at x = -7/3,

d2y/dx2 = 6*(-7/3)+14 = 0