Question Number 135779 by mathmax by abdo last updated on 15/Mar/21
$$\mathrm{calculate}\:\int_{−\infty} ^{\infty} \:\:\:\:\frac{\mathrm{dx}}{\left(\mathrm{x}^{\mathrm{2}} \:+\mathrm{1}\right)^{\mathrm{2}} \left(\mathrm{x}^{\mathrm{4}} −\mathrm{x}+\mathrm{1}\right)} \\ $$
Commented by mathmax by abdo last updated on 16/Mar/21
$$\mathrm{the}\:\mathrm{question}\:\mathrm{is}\:\int_{−\infty} ^{+\infty} \:\frac{\mathrm{dx}}{\left(\mathrm{x}^{\mathrm{2}} \:+\mathrm{1}\right)^{\mathrm{2}} \left(\mathrm{x}^{\mathrm{4}} −\mathrm{x}^{\mathrm{2}} \:+\mathrm{1}\right)} \\ $$