题目
269 int_(0)^1dyint_(y)^1sqrt(x^2)-y^(2)dx的值为A. (pi)/(3).B. (pi)/(6).C. (pi)/(9).D. (pi)/(1).
269 $\int_{0}^{1}dy\int_{y}^{1}\sqrt{x^{2}-y^{2}}dx$的值为
A. $\frac{\pi}{3}$.
B. $\frac{\pi}{6}$.
C. $\frac{\pi}{9}$.
D. $\frac{\pi}{1}$.
题目解答
答案
B. $\frac{\pi}{6}$.