Question

The graph of the derivative, f '(x) is shown below. On what interval is the graph of f (x) concave up?

Answer 1

@Astrophysics

Answer 2

hint:
you have to look at where f '(x) is an increasing function

Answer 3

so (-3,infinity)?

Answer 4

wait nvm not -3, -1

Answer 5

I think:
(-3, +infinity)

Answer 6

sorry:
I think (-1, +infinity)

Answer 7

please keep in mind that a function is concave up, where f ''(x) is greater than zero, namely where f '(x) is an increasing function

Answer 8

okay got it !