I was wondering, if we can approximate $\Gamma(x+\alpha)$, when $\alpha \to 0$ but $(x+\alpha)$ is not necessarily small using stirling's approximation or any other way. For this case is it possible to get a lower and upper bound?
I was hoping for a similar result , I saw in wikipedia 1,when $x \to \infty $,
$$\Gamma(x+\alpha) = \Gamma(x)x^\alpha$$
I have tried $\Gamma(x+\alpha) \approx \Gamma(x)$, but the results are not great.
Thanks in advance