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数学
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求xdx/√(a^2-x^2)的原函数(积分).请给出过程,
人气:435 ℃ 时间:2020-05-19 11:08:51
解答
∫xdx/√(a^2-x^2)
=-1/2∫1/√(a^2-x^2)d(a^2-x^2)
=-1/2*1/(-1/2+1)*(a^2-x^2)^(-1/2+1)+c
=-(a^2-x^2)^(1/2)+c
=-√(a^2-x^2)+c
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