- If f is integrable on (0,inf) and differentiable at 0, and a > 0, and
inf f(x)

Int ---------------- dx is defined

0 x

- show
inf ( f(x) - f(ax) )

Int ---------------- dx = f(0) ln(a)

0 x

- If f is integrable on (0,inf) and differentiable at 0, and a > 0, and
inf f(x)

Int ---------------- dx is defined

0 x

- show
inf ( f(x) - f(ax) )

Int ---------------- dx = f(0) ln(a)

0 x

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