$\sec\:^{\left(2\right)}x-\sec\:^{\left(2\right)}y=\tan\:^{\left(2\right)}x-\tan\:^{\left(2\right)}y$

$\lim_{x\to+\infty}\:x^5+3x-7$

$3x+11<5$

$\int tan\frac{3}{7}xdx$

$x^2-10x+28=7$

$\int\left(\frac{\left(x^{-8}+x^{\frac{2}{9}}e^x-x^{-\frac{7}{9}}\right)}{x^{\frac{2}{9}}}\right)dx$

$\frac{dy}{dx}=\frac{y}{10}+1$