20 points & Brainliest to the one who gets ALL of them correct! NEED HELP ASAP Verify these Identities & SHOW YOUR WORK:

1. cosx−cosxsin²x = cos³x

2. =

3. cos⁴b−sin⁴b = 1−2sin²b

4. =

5. (secx−tanx)² =

HELP!!!

Does the function satisfy the hypotheses of the mean value theorem on the given interval? f(x) = 4x^2 + 3x + 4, [−1, 1] no, f is continuous on [−1, 1] but not differentiable on (−1, 1). no, f is not continuous on [−1, 1]. yes, f is continuous on [−1, 1] and differentiable on (−1, 1) since polynomials are continuous and differentiable on . there is not enough information to verify if this function satisfies the mean value theorem. yes, it does not matter if f is continuous or differentiable; every function satisfies the mean value theorem.