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Part 1: Knowledge / Understanding [15 marks] Identify the choice that best completes the statement or answers the question. Indicate your answer on the grid provided on page 2. 1. If A(x) = sin?(x), find f '[ = ] a. 0 b. d 2. If Ax) = sinx cosX ' find f a. 1 C . b. -2 d. N 3. Find the slope of the tangent to the curve y = 2 sin x at x = = a. C. -1 2 b. d. 4. Find the slope of the tangent to the curve y = 3x cosx at X = I. a. - 3 C. 3 b. 0 d. 6 5. Find the slope of the tangent to the curve y = 4 sin 2x at X = . a. -3 C. 31/3 2 b. 6 d. 9 6. If y = 2 cos x + sin 2x, find y" at x = - a. C . d. 1