(x^2-1)^0.5的不定积分令sect=x,原式=((sect)^2-1)^0.5dsect=tant*sect*tantdt=(tant)^2dtant=1/3(tant)^3+c=1/3(x*x-1)^1.5+c,哪里出错了?
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![(x^2-1)^0.5的不定积分令sect=x,原式=((sect)^2-1)^0.5dsect=tant*sect*tantdt=(tant)^2dtant=1/3(tant)^3+c=1/3(x*x-1)^1.5+c,哪里出错了?](/uploads/image/z/5247100-28-0.jpg?t=%28x%5E2-1%29%5E0.5%E7%9A%84%E4%B8%8D%E5%AE%9A%E7%A7%AF%E5%88%86%E4%BB%A4sect%3Dx%2C%E5%8E%9F%E5%BC%8F%3D%28%EF%BC%88sect%EF%BC%89%5E2-1%29%5E0.5dsect%3Dtant%2Asect%2Atantdt%3D%28tant%29%5E2dtant%3D1%2F3%28tant%29%5E3%2Bc%3D1%2F3%28x%2Ax-1%29%5E1.5%2Bc%2C%E5%93%AA%E9%87%8C%E5%87%BA%E9%94%99%E4%BA%86%3F)
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