求∫arctanx/(x²(1+x²))dx
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![求∫arctanx/(x²(1+x²))dx](/uploads/image/z/5350291-43-1.jpg?t=%E6%B1%82%E2%88%ABarctanx%2F%28x%26%23178%3B%281%2Bx%26%23178%3B%29%29dx)
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求∫arctanx/(x²(1+x²))dx
求∫arctanx/(x²(1+x²))dx
求∫arctanx/(x²(1+x²))dx
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