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find-A-n-dx-1-x-2-n-with-n-from-N-and-n-1-




Question Number 28994 by abdo imad last updated on 02/Feb/18
find  A_n =  ∫_(−∞) ^(+∞)      (dx/((1+x^2 )^n ))  with n from N and n≥1.
findAn=+dx(1+x2)nwithnfromNandn1.

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