$\int\frac{x^3+1}{x\left(x^2-1\right)}dx$

$3a+4a+a+b+3b-7b$

$4.92=-log\left(x\right)$

$14+\left(-18\right)-\left(-17\right)-4$

$\frac{d}{dx}\cot\left(x\right)=-\csc\left(x\right)$

$-11-6\left(4+3m\right)$

$\frac{2.\frac{1}{2}^{-1}+\frac{\frac{1}{2}^{-1}}{2}}{\frac{1}{2}}$