$$432\left(72\cdot4\right)\:-687-100$$

$$y'=-16y$$

$$\int\cos^2\left(4x\right)\sec\left(4x\right)dx$$

$$f\left(x\right)=\frac{4x^2-3\sqrt{x}}{x}$$

$$csc\:x\:-\:sin\:x\:=\:cos\:x\:tan\:x$$

$$2\csc\left(2x+\frac{\pi}{6}\right)$$

$$x^5\left(2x\right)^3$$