LA

Find: $\int\frac{x^{2}+x+1}{(x+2)(x^{2}+1)}dx$.

SA

Find: $\int e^{x}[\frac{1}{(1+x^{2})^{\frac{3}{2}}}+\frac{x}{\sqrt{1+x^{2}}}]dx$

SA

Evaluate $\int_{0}^{\frac{\pi}{2}}[\log(\sin~x)-\log(2\cos~x)]dx.$

LA

Find: $\int\frac{x^{2}+1}{(x^{2}+2)(2x^{2}+1)}dx$

VSA

Find: $\int\frac{1}{x(x^{2}-1)}dx.$

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