$\int_0^{350}200\left(x\right)dx$

$\int\frac{1}{10x-3}dx$

$\frac{1}{3+cos\left(x\right)}=\frac{1}{4-cos\left(x\right)}$

$\left(-71\right)+\left(+89\right)+\left(-752\right)+\left(+1569\right)+\left(+6\right)+\left(-2989\right)+\left(+643\right)+\left(-986\right)$

$2x-9\le x+4$

$4\log x-2\log\left(x-3\right)$

$\lim_{n\to\infty\:}\frac{\left(1\right)^{n+1}}{1^n+1}$