- #1
bigred09
- 3
- 0
ok i have been studying the in-depth processes of trigonometric substitution with integrals and this problem has me frusterated.
[tex]\int x^2\sqrt{(x^2-4)} dx[/tex]
The evaluation is clear (from an old Table of Integrals I found), but the derivation is not at all clear, which is what i want to know.
I also tried to solve this by integration by parts, but every approach ended with an even more complicated integral, so trig substitution is probably the best choice.
Can anyone help?
[tex]\int x^2\sqrt{(x^2-4)} dx[/tex]
The evaluation is clear (from an old Table of Integrals I found), but the derivation is not at all clear, which is what i want to know.
I also tried to solve this by integration by parts, but every approach ended with an even more complicated integral, so trig substitution is probably the best choice.
Can anyone help?