i. The region below y = sin x and y = cos x buT above †he x-axis on [0, x/2].
integrate.)
j. The region in +he preceding problem roTated abou †he y-axis. (Se up The inTegral only, but do no inTegrate.)
Y2/
DO (74 - GrecesyY)みrm 『 (resny)- 24) gy
r/4 72
Cylindrical Shell: 2z 」 xsinxdx+2rl xcosxdx
x/4
ロロ
2
万 / (arccos^ ー arcsin^ y)@y
0