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limx→0(ex2/2cosx)1/x4 \large \lim_{x\to 0} (e^{x^2 /2} \cos x)^{1/x^4} x→0lim(ex2/2cosx)1/x4
If the value of the limit above is equal to e−a/b e^{-a/b} e−a/b, where aaa and bbb are coprime positive integers, find the value of a+ba+ba+b.
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