MathML code for exponential equation.

Here's the MathML code for the equation $e^{-7t}$:

xmlCopy code
<math xmlns="http://www.w3.org/1998/Math/MathML">
  <mrow>
    <msup>
      <mi>e</mi>
      <mrow>
        <mo>-</mo>
        <mn>7</mn>
        <mi>t</mi>
      </mrow>
    </msup>
  </mrow>
</math>

You can use this MathML code to display the equation $e^{-7t}$ in MathML-compatible applications or websites.