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find-0-cosx-ch-2x-x-2-x-3-2-dx-




Question Number 133125 by abdomsup last updated on 19/Feb/21
find ∫_0 ^∞  ((cosx ch(2x))/((x^2  +x+3)^2 ))dx
$${find}\:\int_{\mathrm{0}} ^{\infty} \:\frac{{cosx}\:{ch}\left(\mathrm{2}{x}\right)}{\left({x}^{\mathrm{2}} \:+{x}+\mathrm{3}\right)^{\mathrm{2}} }{dx} \\ $$
Commented by mathmax by abdo last updated on 20/Feb/21
the Q is find ∫_(−∞) ^(+∞)  ((cosxch(2x))/((x^2  +x+3)^2 ))dx
$$\mathrm{the}\:\mathrm{Q}\:\mathrm{is}\:\mathrm{find}\:\int_{−\infty} ^{+\infty} \:\frac{\mathrm{cosxch}\left(\mathrm{2x}\right)}{\left(\mathrm{x}^{\mathrm{2}} \:+\mathrm{x}+\mathrm{3}\right)^{\mathrm{2}} }\mathrm{dx} \\ $$

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