1.

int (1)/(x^(4)+1)dx=A tan^(-1)((x^(2)-1)/(sqrt(2)x))-B log|(x^(2)-sqrt(2)x+1)/(x^(2)+sqrt(2)x+1)|+Cthen

Answer»

A) `A=2B`
B) `A=-2B`
C) `2A=B`
D) `2A=-B`

ANSWER :1


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