$\frac{dy}{dx}\sin\left(2x\right)=y\cos\left(x\right)$

$-10x^2-7x-12$

$74+41$

$\frac{dy}{dx}=\frac{\left(eysinx\right)}{\left(1+ecosx\right)}$

$3a+3b+b+a$

$x\left(3x+2\right)+3\left(x+6\right)\le3x\left(x+1\right)$

$\int_{1\:}^{\infty\:}\left(\frac{1}{3x+5}\right)dx$