Question

Solve:$\int \frac{dx}{\sqrt{x+a}}dx$

Answer 1

$\int \frac{1}{\sqrt{x+4}}dx$

Let $x+e=t^1$

$dx=2+dt$

$\int \frac{2t}{t}dt\Rightarrow 2t$

$\Rightarrow 2\sqrt{x+a}+c$