To represent a differential equation in LaTeX, you can use the `\dfrac{d}{dx}` command to represent the differential operator, and you can use the `\text{ }` command to add text or variables to the equation.
For example, the following code:
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`\dfrac{d}{dx} \left( x^2 \right) = 2x`
will produce the following output:
$$\\dfrac{d}{dx} \\left( x^2 \\right) = 2x$$
You can also use the `amsmath` package to use the `\frac{d}{dx}` command, which will produce a slightly smaller differential operator.
For example:
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`\usepackage{amsmath} \begin{equation} \frac{d}{dx} \left( x^2 \right) = 2x \end{equation}`
will produce the following output:
$$\\frac{d}{dx} \\left( x^2 \\right) = 2x$$
