Solve the problem.
-Suppose that the second derivative of the function y = f(x) is y'' = (x - 3)(x + 9). For what x-values does the graph of f have an inflection point?
A) -3, -9
B) -3, 9
C) 3, 9
D) 3, -9

Question

Quizplus · Accepted Answer

Inflection points occur where the second derivative changes sign, which happens at the roots of the second derivative. The roots of y'' = (x - 3)(x + 9) are x = 3 and x = -9, indicating the inflection points.

Solve the Problem. -Suppose That the Second Derivative of the Function Y =