1i 've edited it.......
1.\int (sec^{2}x+sin^{2}x)/2sin^{2}xcos^{2}x
2.\int 1/x^{3}(x-1) dx
3.\int (1+x^{2}+x)/x^{2}(x+1)dx
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9 Answers
112) on doing partial fractions u'll get
\frac{1}{x-1}-\frac{1}{x}-\frac{1}{x^{2}}-\frac{1}{x^{3}} (I THINK SO)
sO THE ANSWER IS log\left|\frac{x-1}{x} \right|+\frac{1}{x}+\frac{1}{2x^{2}}
113)
It is
\frac{1}{x^{2}}+\frac{1}{x+1}
So answer is
log\left|x+1 \right|-\frac{1}{x}
