Unformatted text preview: Z ∞ e xtt 3t 2 / x 2 d t for large positive x . 4 Compute the ﬁrst term in the asymptotic expansion of Z ∞ cos [ x ( at 2t )] cos [ x ( bt 2 + t )] d t for large positive x and a > b > 0. What happens as a → b ? 1...
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 Winter '08
 Young,W
 Economics, Asymptotic expansion, Applied Mechanics, large positive x.

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