Question

http://prntscr.com/9lpqtj

Answer 1

Is the answer 3?

Answer 2

sorry i can't open the page can u screen shot it

Answer 3

i dont know how to screenshot, you should be able to open it

Answer 4

slope through a and b looks like this, ya?

Answer 5

And you said that we have three x's which satisfy f'(x) giving us the same slope as that secant line?

Hmm that seems about right :)

Answer 6

It must have something to do with the number of critical points,
I don't know how to formalize it,

but just looking at the graph, that seems to make sense, ya?

Answer 7

ok cool, that was my thinking. Thanks!