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Question Number 159671 by Sameza last updated on 19/Nov/21

∫ _0 ^∞  ((sin^2 (x)−xsin(x))/x^3 ) dx

$$\int\underset{\mathrm{0}} {\overset{\infty} {\:}}\:\frac{\mathrm{sin}^{\mathrm{2}} \left({x}\right)−{x}\mathrm{sin}\left({x}\right)}{{x}^{\mathrm{3}} }\:{dx} \\ $$

Answered by metamorfose last updated on 20/Nov/21

u may use a DL of  ((sinx−x)/x^2 )

$${u}\:{may}\:{use}\:{a}\:{DL}\:{of}\:\:\frac{{sinx}−{x}}{{x}^{\mathrm{2}} } \\ $$

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