arctan - Wolfram|Alpha
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Assuming "arctan" is a math function | Use as referring to a mathematical definition or a word instead

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    Series expansion at x=0:

    link to /input/?i=x-x%5E3%2F3%2Bx%5E5%2F5&lk=1&a=ClashPrefs_*Math-
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    Series expansion at x=-i:

    Series expansion at x=i:

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    Series expansion at x=∞:

    link to /input/?i=%CF%80%2F2-1%2F%285+x%5E5%29%2B1%2F%283+x%5E3%29-1%2Fx&lk=1&a=ClashPrefs_*Math-
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    Derivative:

    link to /input/?i=1%2F%281%2Bx%5E2%29&lk=1&a=ClashPrefs_*Math-
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    Indefinite integral:

    link to /input/?i=x+tan%5E%28-1%29%28x%29-1%2F2+log%281%2Bx%5E2%29&lk=1&a=ClashPrefs_*Math-
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