i need to find the appropriate trigonometric substitution for this problem. i dont know why, but im only having problems finding the right sub. i can do the rest pretty easily. please help me with this:(adsbygoogle = window.adsbygoogle || []).push({});

[tex]\int \frac{x^2}{sqrt(4x^2+8)}[/tex]

here's what i done:

sqrt(4(x^2+2)) ----> a*tan(theta)

so i'm thinking that x should be equal to sqrt(2)/2*tan(theta), but it's incorrect. can someone help? (i know it's the wrong sub because i'm doing my hw online and it askes me for the trig sub first to check)

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# Homework Help: Another trig sub.

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