- #1
liyz06
- 6
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Homework Statement
I'm reading Hinch's perturbation theory book, and there's a statement in the derivation:
...[itex]\int_z^{\infty}\dfrac{d e^{-t^2}}{t^9}<\dfrac{1}{z^9}\int_z^{\infty}d e^{-t^2}[/itex]...
Why is that true?