Question: Please explain me question 1, 3 and 4 and pls read the headline before solving all problems. Thank you. Please only solve a, c, e,

Please explain me question 1, 3 and 4 and pls read the headline before solving all problems. Thank you.
Please only solve a, c, e, h for question 1.



1. Find the derivative for each of the following. a. y = cos(-7x) b. y = -12sin(4 + 5x) C. f(x) = sin-3(x4) d. y = 4xsin4(5 - 9x)-1 e. f(x) = cos4(sin2x) f. y = XCOS f ( x) 1 + cos2x g. h . 1 - sin2x y = cos-4x - sin3x y = sin2 1 - Vx 1+ vx3. Find the critical numbers, the intervals of increase and decrease, and any maximum or minimum values. a. y = COS2X, -ML S X S n b. y = sinx - COSX, -TL E X S ItIf f(x) = sin2xcos5x, evaluate f"(). 4
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