3). (15 points) Consider sin(x³-152³)dr. 1 We cut [0,3] into N equal pieces. In each piece [-1,] we pick a random . Compute the Riemann sum N N SN = f(x)(x-x-1) = f() k-1 where f(x)=sin(- 15x³). k=1 Find N so that Sy almost equal to sin(-35") dr with an error 0.001. Give brief reasons, your answer dose NOT need to be optimal!