$$\left|-1\right|>0$$

$$\int\frac{\cos x}{\sqrt{2\sin x+1}}dx$$

$$\lim_{x\to0}\left(\frac{1}{3x+ax^2-\sqrt{x^2+bx^3}}\right)$$

$$a^3a^3$$

$$\frac{dy}{dx}=\frac{x+4}{y-4}$$

$$\frac{dy}{dx}\left(2^{x^2}-2^{y^2}=2x^2y^2\right)$$

$$59-\left(-19\right)$$