36. Find the critical points using second derivative test of the equation y = 2x³ + 9x² + 27 %3D a. (-3,54) b. (0,27) C. (-3 , 81) d. (0,27) and (-3,54) 37. Differentiate w = sin*y cos*y a. -sin 2y cos2y sin 2y cos2y -sin 2y cos2y sin 2y cos2y b. C. d. 38. Differentiate y = 2 cos² - sin t b. - sin 2t a. – sin- C. d. sin

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