(c) The following two functions are defined in polar coordinates for
0<=\theta <=\pi
r_(1)(\theta )=\theta +\pi
r_(2)(\theta )=2\theta
Sketch both functions, noting where they intersect the
x
-axis. (d) Calculate the area of the shape bounded by the functions
r_(1)
and
r_(2)
, and the
x
-axis.