What values of p make \frac{1}{x^\alpha + x^\beta} integrable on (0,\infty)?

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SUMMARY

The integrability of the function \(\frac{1}{x^\alpha + x^\beta}\) on the interval \((0, \infty)\) is determined by the values of \(p\) for which the function belongs to the space \(L^p(0, \infty)\). For the case where \(0 < \alpha < \beta < \infty\), the analysis reveals that the function behaves differently near 0 and near infinity. Specifically, the function is integrable near 0 for \(p < \alpha\) and near infinity for \(p > \beta\). Thus, the function is integrable on \((0, \infty)\) for \(p\) values in the range \(0 < p < \alpha\) or \(p > \beta\).

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I'm working through some old prelim problems, and one of them has me stumped:

"For [itex]0 < \alpha < \beta < \infty[/itex], for which positive real numbers [itex]p[/itex] do we have

[tex] \frac{1}{x^\alpha + x^\beta} \in L^p (0,\infty)[/tex]
 
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Analyze separately how it behaves near 0 and near infinity.
 

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