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1. |
If value of ∫ \(\frac{2x}{(x^2+1)(x^2+3)}dx\) will be _______ where c is an arbitary constant. |
A. | \(\frac{1}{2}log\frac{x^2 +1}{x^2+3}+c\) |
B. | \(\frac{1}{2}log\frac{x^2 -1}{x^2+1}+c\) |
C. | \(2log\frac{x +1}{x-3}+c\) |
D. | \(2log\frac{2x +1}{2x-1}+c\) |
Answer» B. \(\frac{1}{2}log\frac{x^2 -1}{x^2+1}+c\) | |