Question

HELP WITH CALC!!!! I don't understand this at all. Problem attached...

Answer 1

they tell you A(x) is the integral of the given function.

this tell us that the given function is the derivative of A(x)

what does a derivative tell us about min and max?

Answer 2

if its increasing or decreasing?

Answer 3

good, what does a derivative equal to zero tell us?

Answer 4

its not increasing or decreasing

Answer 5

yes, or put another way, it tells us the critical values that define a min or max

Answer 6

lets see if we can sketch a suitable A(x) from this