Question Number 159671 by Sameza last updated on 19/Nov/21
$$\int\underset{\mathrm{0}} {\overset{\infty} {\:}}\:\frac{\mathrm{sin}^{\mathrm{2}} \left({x}\right)−{x}\mathrm{sin}\left({x}\right)}{{x}^{\mathrm{3}} }\:{dx} \\ $$
Answered by metamorfose last updated on 20/Nov/21
$${u}\:{may}\:{use}\:{a}\:{DL}\:{of}\:\:\frac{{sinx}−{x}}{{x}^{\mathrm{2}} } \\ $$