Question

Suppose the derivative of a continuous function f is given below. On what interval is f increasing? (If you need to use -∞ or ∞, enter -INFINITY or INFINITY.)
f '(x) = (x + 2)^6(x - 4)^7(x - 6)^8

Answer 1

(4,?)u(6,infinity)

Answer 2

ok so what are the critical numbers
this isn't going to be too bad since f' is already factored

Answer 3

4,6

Answer 4

and ?

Answer 5

-2

Answer 6

y'all thinking way too hard

Answer 7

test each interval