Question

Please help! satisfy (hypothesis of Rolle's Theorem)

Answer 1

\[ f(x) = x\sqrt{21-x} \]

What've you got so far?

Answer 2

closed interval \[ [0,21] \]

Answer 3

@AllTehMaffs well, I thought the answer was 2, but it's not.

Answer 4

what'd you get for your derivative?

Answer 5

I'm getting 14, too :/

Answer 6

the only solution is 14, so I guess the alternative is that is doesn't satisfy the hypothesis, but that makes no sense. because it does... :/