2. (a) Sketch sin(2x) over the interval [0, pi/2]. (b)Approximate 2 sin(2x) dx using M3, the midpoint approximation with3 rectangles. (c) On your graph from part (a), draw the rectanglesthat appear 2. (a) Sketch \( \sin (2 x) \) over the interval \( \left[0, \frac{\pi}{2}\right] \). (b) Approximate \( \int_{0}^{\frac{\pi}{2}} \sin (2 x) d x \) using \( M_{3} \), the midpoint approximation with 3 1 answer