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Integrate [2x]/[(x^4)+1]?

I know I'm supposed to use substitution... I just can't figure out how. Thanks!

2006-11-27 13:15:56 · 1 answers · asked by banan 2 in Education & Reference ➔ Homework Help

1 answers

let u = x^2
du = 2x dx

This turns the function in to:
1 / (u^2 + 1) - which you can work from.

2006-11-28 00:49:08 · answer #1 · answered by ³√carthagebrujah 6 · 0⤊ 0⤋

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