∫\(\frac { x }{ 1+x^{ 2 } } \) dx = ………………
A. tan-1 x + c
B. log (1 + x2) + c
C. log x + c
D. \(\frac{1}{2}\) log (1 + x2) + c
Answer:D
∫\(\frac { x }{ 1+x^{ 2 } } \) dx = ………………
A. tan-1 x + c B. log (1 + x2) + c C. log x + c D. \(\frac{1}{2}\) log (1 + x2) + c