Hot Integral - 21

Calculus Level 5

x ( cos ( 2 π n x ) i sin ( 2 π n x ) ) x + x 3 / 4 x x d x \displaystyle \int\limits_{-\infty}^{\infty} x(\cos(2\pi nx) - i\sin(2\pi nx))\frac{x+|x|^{-3/4}\sqrt{|x|}}{\sqrt{|x|}} dx

Given the above integral can be expressed in the form below :

δ ( n ) A π B n C / D E n F G π H n I / J i ( K + L n M Γ ( O P ) Q π R / S n T / U ) ) \displaystyle \frac{\delta(n)}{A\pi^B|n|^{C/D}}-\frac{En^F}{G\pi^H|n|^{I/J}} - i(\frac{\sqrt{K+\sqrt{L}}n^M\Gamma(\frac{O}{P})}{Q\pi^{R/S}|n|^{T/U}}))

where n ( , ) n \in (-\infty,\infty) and i = 1 i=\sqrt{-1} .

Calculate A + B + C + D + E + F + G + H + I + J + K + L + M + O + P + Q + R + S + T + U A+B+C+D+E+F+G+H+I+J+K+L+M+O+P+Q+R+S+T+U

Note : δ ( . ) \delta(.) represents delta function and use s g n ( x ) = x x sgn(x)=\frac{x}{|x|} .


This is a part of Hot Integrals


The answer is 84.

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