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Full Version: Three indefinite points that cannot be counted

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Not much to say, directly on the topic

Code:

[int(e^(k*atan(x))/(x^2+1)^(3/2), x), int(x*atan(x)/(x^2+1)^(3/2), x), int(atan(x)/(x^2*(x^2+1)), x)]

Maple and XCAS are powerless
Answer for Wolfram Alpha

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yangyongkang