For this question you may use the identity 142434! ! ! "(0 +1) 2 for every positive integer n. (a) Find a formula for the approximation of the area under the curve y - 2x, between a = 0 and =10, using n rectangles of equal width, and with right endpoints. Call this expression Run (b) Find a formula for the approximation of the area under the curve y= 2x, between a =0 and =10, using n rectangles of equal width, and with left endpoints. Call this expression Lin (c) Verify, by computing the two limits, that lim Rn = lim In