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solve-this-complex-integral-e-it-1-t-2-dt-




Question Number 75721 by Gazella thomsonii last updated on 15/Dec/19
solve this complex integral∫_(−∞) ^(+∞)  (e^(it) /( (√(1+t^2 ))))dt
solvethiscomplexintegral+eit1+t2dt
Commented by MJS last updated on 15/Dec/19
∫_(−∞) ^∞ (e^(it) /( (√(t^2 +1))))dt=2∫_0 ^∞ ((cos t)/( (√(t^2 +1))))dt+i∫_(−∞) ^∞ ((sin t)/( (√(t^2 +1))))dt=  =2∫_0 ^∞ ((cos t)/( (√(t^2 +1))))dt  but I cannot solve this...
eitt2+1dt=20costt2+1dt+isintt2+1dt==20costt2+1dtbutIcannotsolvethis

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