How to calculate [math]\int_ {0} ^ {\infty} \frac {x^ {2} *x^ {\frac {1} {3}}} {(x+1) ^ {4}} dx[/math] by the use of a keyhole contour (complex analysis, definite integrals, residue calculus, math) - Quora
How to calculate this improper integral using residues [math] \displaystyle\int_{-\infty}^{+\infty} \frac{x^2+4}{x^4+16} \,dx [/math] - Quora
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