題組內容
5.
(a) (7 points) Use a suitable change of variable to compute
where R is the square with vertices (1,0), (0, 1), (-1, 0) and (0, -1).
(a) (7 points) Use a suitable change of variable to compute
where R is the square with vertices (1,0), (0, 1), (-1, 0) and (0, -1).