A. $\frac{\pi}{3}$.
B. $\frac{\pi}{6}$.
C. $\frac{\pi}{9}$.
D. $\frac{\pi}{1}$.
五.计算积分int_(-1)^1dyint_(1+sqrt(1-y^2))^sqrt(2-y^(2))(sqrt(x^2)+y^(2)+sin^3y)dx五.(
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