integration of x/1+x ki power 4??

Asked by shashank tripathi | 22nd Jun, 2013, 01:06: AM

Expert Answer:

Let u = x^2; then du = 2x dx
Therefore,

? x dx /(1+x^4) = (1/2) ? 2x dx / (1+x^4) = (1/2) ? du / (1 + u^2) = (1/2) tan-1 u + C = (1/2) tan-1 (x2) + C 

Answered by  | 22nd Jun, 2013, 09:43: AM

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