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calculate-ch-arctan-2x-x-2-x-1-dx-




Question Number 104421 by mathmax by abdo last updated on 21/Jul/20
calculate ∫_(−∞) ^(+∞)  ((ch(arctan(2x)))/(x^2  +x+1))dx
$$\mathrm{calculate}\:\int_{−\infty} ^{+\infty} \:\frac{\mathrm{ch}\left(\mathrm{arctan}\left(\mathrm{2x}\right)\right)}{\mathrm{x}^{\mathrm{2}} \:+\mathrm{x}+\mathrm{1}}\mathrm{dx} \\ $$

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