\(\int\frac{dx}{x(1+8x^{8})}=?\)
A. \(\frac{1}{8}ln|1-\frac{1}{1+8x^{8}}|+c\)
B. \(\frac{1}{8}ln|1-\frac{1}{x(1+8x^{8})}|+c\)
C. \(\frac{1}{8}ln|\frac{1}{x(x+8x^{8})^{-1}}|+c\)
D. \(\frac{1}{8}ln|x-\frac{1}{1+8x^{7}}|+c\)
সঠিক উত্তরঃ
A.
\(\frac{1}{8}ln|1-\frac{1}{1+8x^{8}}|+c\)