[
10points] Let A be the area of the region in the first quadrant enclosed by the
y-axis,
y=
tanxand the line
y=k, where
k>0. a. Find the area, A , when
k=1. b. If the region, A , when
k=\sqrt(3), is rotated about the
x-axis, what is the resulting volume? [10 points] Let
f(x)=|x^(2)-4|. Find the average value of the function from -1 to 3 .