$$sin\left(90-y\right)cos\left(y\right)=\sqrt{2}$$

$$\int x^3cos\left(x^4-1\right)dx$$

$$\lim_{x\to-2}\left(\frac{x^2-x-6}{x^2-x-2}\right)$$

$$\frac{dy}{dx}=\frac{2-xy}{2}$$

$$16\sin^2\left(x\right)+16\cos^2-32\sin\left(x\right)\cos\left(x\right)-16$$

$$-9\cdot58$$

$$ln\left(3x-6\right)+8^{2x-1}$$