21】计算int(x^2)/(sqrt(a^2)-x^(2) )dx(a>0).

4.6】求int(x^2dx)/(sqrt(a^2)-x^(2))(a>0).4.6】求$\int\frac{x^{2}dx}{\sqrt{a^{2}-x^{2

int_(0)^a (x^2sqrt(a^2-x^2)),(rm dx)(a>0)$\int_{0}^{a} {x^2\sqrt{a^2-x^2}}\,{\rm

计算: (int )_(0)^sqrt (2)sqrt (2-{x)^2}dx= ．计算: ．

定积分(int )_(0)^1sqrt (2x-{x)^2}dx=( )(int )_(0)^1sqrt (2x-{x)^2}dx=( )(int )_(0

类似地，f(x)=x-int_(0)^2asqrt(2ax-x^2)f(x)dx,其中a>0,则f(x)=_____.类似地，$f(x)=x-\int_{0}^

(int )_(0)^sqrt (2)sqrt (2-{x)^2}dx

[题目] (int )_(0)^sqrt (2)sqrt (2-{x)^2}dx= __

[题目] (int )_(0)^sqrt (2)sqrt (2-{x)^2}dx

计算下列积分：(int )_(0)^sqrt (2)sqrt (2-{x)^2}dx.计算下列积分：.

计算下列定积分：(int )_(0)^sqrt (2)sqrt (2-{x)^2}dx；计算下列定积分：；