$$\int6y\:dx$$

$$\sin\left(a\right)=\sin\left(\pi-a\right)$$

$$cos\left(x\right)\frac{dy}{dx}+sen\left(x\right)y=2xcos^2\left(x\right)$$

$$4x^4+72x+324$$

$$5x+16<8x-5$$

$$\int\frac{\left(6x^3+5x^2+58x-51\right)}{x^2+9}dx$$

$$\frac{dy}{dx}=ycos5x$$