1. If f(x) - sin 3x, find f a. 3 C. 9 b. -3 - 9 2. If f(x) = cos (nx) - sin (nx), find f An a. -873 C. 8n b. -8 d. -472 3. Find f'(x) if f(x) = 2e*. a. 20* c. e" In 2 b. d. 2e 4. Find the equation of the tangent to y = e" at the point (0, 1). a. y =x+I c. y = ex + 1 b. y=-x- 1 d. y=x+1 5. Iff(x) = 2x e", find f'(1). a. 2e c. 0 b. be d. 4e 7. Find the equation of the tangent to y = 3 + 3ex that is parallel to y = 6ex + 5. a. 6ex- y = 0 c. 6ex-y = 68 b. 6ex+ y = 0 d. 6ex+ y = 6e 8. Find the equation of the tangent to the curve y = 4x - tan x at the point where x =9. Differentiate the following. a) y = 4x b) y = 5xex