Input:
`d(f(x)/g(x))`
Compute:
$$\frac{d}{dx} \frac {f(x)}{g(x)}$$
Result:
$$(-\frac{d}{dx} g(x))\ f(x)\ (g(x)^{-2})+\frac{d}{dx} f(x)\ \frac{1}{g(x)}$$
LaTeX:
(-\frac{d}{dx} g(x))\ f(x)\ (g(x)^{-2})+\frac{d}{dx} f(x)\ \frac{1}{g(x)}
$$\frac{d}{dx} \frac {f(x)}{g(x)} == (-\frac{d}{dx} g(x))\ f(x)\ (g(x)^{-2})+\frac{d}{dx} f(x)\ \frac{1}{g(x)}$$