Whiteboard Example

% https://whiteboard.ibrahimahmed.ca/view.html?whiteboard=qWeTorUUIgQviSdwrsQHx4baXO32
\begin{align*}
S(\omega)
&= \frac{\alpha g^2}{\omega^5} e^{[ -0.74\bigl\{\frac{\omega U_\omega 19.5}{g}\bigr\}^{\!-4}\,]} \\
&= \frac{\alpha g^2}{\omega^5} \exp\Bigl[ -0.74\Bigl\{\frac{\omega U_\omega 19.5}{g}\Bigr\}^{\!-4}\,\Bigr]
\end{align*}