Let \( f(x)=\tan ^{-1}\left(1+x+x^{2}+\ldots \ldots+\infty\right), ... VIDEO
Let \( f(x)=\tan ^{-1}\left(1+x+x^{2}+\ldots \ldots+\infty\right), g(x)=\cot ^{-1}\left(\frac{1}{1-x+x^{2}-x^{3}+\ldots .+\infty}\right) \), thenhttps://bit.ly/YTAI_PWAP https://www.pw.live
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