calculate-A-0-cos-4-x-x-2-2-2-dx-2-find-the-value-of-0-cos-4-x-x-2-3-2-dx-

Question Number 136406 by mathmax by abdo last updated on 21/Mar/21

calculate A_{λ} = \int_{0}^{\infty} \frac{\cos^{4} x}{{(x^{2} + λ^{2})}^{2}} dx

2) find the value of \int_{0}^{\infty} \frac{\cos^{4} x}{{(x^{2} + 3)}^{2}} dx

Commented by mathmax by abdo last updated on 21/Mar/21

λ > 0