1. [1 mark ] [MC] All of the following have a derivative of 0 except: a. cos x + sin x C . cot x c - CSC x b. tan x + sec x sin2x sinx cosx 2. [ 1 mark ] [MC] Given x = sec(xy), then ax is: a. cos ( xy ) sin (xy) C. 1 - xy tan(xy) x tan(xy) b. 1 - sec(xy) tan(xy) d. 1 - y x sin (xy) 3. [ 1 mark ] (MC] The exact value of lim cos + x- cos ( #) is x - C a. 1/3 C. V/3 2 b. d. 4. [1 mark ] [MC] The slope of the tangent line to y = sin x tan x at (?, is: a. V3 C . 5 1/3 2 b. 3 1/ 3 d. 7 13 5. [ 1 mark ] [MC] The second derivative of y = 3sin x is: a. C. 12cos x b. 6 cos 2x d. 12 cos 2x 6. [1 mark] State the exact value of the limit: lim sin (40) 0 - 0 30 2 7. [1 mark] State the derivative of y = cot(cos(3x )). Do not simplify