1 Let ak (a) Use the Integral Test error bounds to find a lower and an upperbound on the error resulting from approximative > ax by its 4th partial sum. k= 1 (b) Use the 4th partial sum and your answer to (a) to find a lower and an upperbound on ak (c) Use the Alternating Series Test error bounds to find an upperbound on the magnitude of the Do error resulting from approximative > (-1)*+lax by its 4th partial sum. K = 1 (d) Use the 4th partial sum and your answer to (c) to find a lower and an upperbound on Z(-1) ktlak. k =1 (e) By hand, find the exact value of ak k=1 (f) By hand, find the exact value of >(-1)*+lak. k=1