Hey,
What is the best approach to integrate this:
sqrt[ (t+a)^2 + a^2 ] dt
Thanks in advance
In my opinion the best way is the simple substution $\displaystyle x= \frac{t}{a}$ so that the integral becomes...
$\displaystyle \displaystyle a^{2}\ \int \sqrt{1+ x^{2}}\ dx$ (1)
... that can be solved by parts in some steps...
Kind regards
$\displaystyle \chi$ $\displaystyle \sigma$