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1-3-3-x-sin-x-2-1-x-2-x-2-cos-x-1-x-dx-




Question Number 142273 by liberty last updated on 29/May/21
  ∫_(1/3) ^3  ((x+sin (x^2 −(1/x^2 )))/(x(2+cos (x+(1/x))))) dx ?
$$\:\:\underset{\frac{\mathrm{1}}{\mathrm{3}}} {\overset{\mathrm{3}} {\int}}\:\frac{{x}+\mathrm{sin}\:\left({x}^{\mathrm{2}} −\frac{\mathrm{1}}{{x}^{\mathrm{2}} }\right)}{{x}\left(\mathrm{2}+\mathrm{cos}\:\left({x}+\frac{\mathrm{1}}{{x}}\right)\right)}\:{dx}\:? \\ $$
Commented by abdullahoudou last updated on 29/May/21
u=1/x
$${u}=\mathrm{1}/{x} \\ $$

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