1. O is the origin and A is the point on the curve y=tan x where
Calculate the area of the region R enclosed by the arc OA, the x-axis and the line , giving your answer in EXACT form. Hence, find in EXACT form.
Then, the region S is enclosed by the arc OA, the y-axis ad the line . Find the volume of the solid of revolution formed when S is rotated through about the x-axis, giving your answer in EXACT form.
2. Give your answer in EXACT form for
for qn 1 :
i can do the first part....my ans is
i can do the second part too by using integration by parts....my ans is
then I don't know how to do the last part. if it rotated about y-axis , then i know, but it rotated about the x-axis.
for qn 2:
what i tried to do was
then ...i'm stuck....