1

How do you go about getting the \underset text to show up below an equation that has a subscript? The current code that I have produces this output:

enter image description here CODE

\documentclass{article}
\usepackage[landscape]{geometry}
\usepackage[table]{xcolor}
\usepackage{url}
\usepackage{mathtools}
\usepackage{multicol}
\usepackage{amssymb,amsthm}

\begin{document}

\tiny{
\begin{align*}
\hspace*{4.65cm}
C(s) & =\dfrac{\omega^{2}_{n}}{s(s^{2}+2\zeta\omega_{n}s+\omega^{2}_{n})}\\
c(t) & = 1-\dfrac{e^{-\zeta\omega_{n}t}}{\sqrt{1-\zeta^{2}}}\cos\left(\omega_{n}\sqrt{1-\zeta^{2}}t-\tan^{-1}\left(\frac{\zeta}{\sqrt{1-\zeta^{2}}}\right)\right)\\[0.2cm]
& = 1-\dfrac{e^{-\zeta\omega_{n}t}}{\sqrt{1-\zeta^{2}}}\sin\left(\omega_{n}\sqrt{1-\zeta^{2}}t+\tan^{-1}\left(\frac{\sqrt{1-\zeta^{2}}}{\zeta}\right)\right)\\
M_{P_{t}} & = 1 + e^{\frac{-\zeta\pi}{\sqrt{1-\zeta^{2}}}}\hspace*{0.5cm} \fbox{$T_{p}=\frac{\pi}{\omega_{n}\sqrt{1-\zeta^{2}}}=\frac{\pi}{\omega_{d}}$}\\
\underset{(\delta=5\%)}T_{s}& \cong\frac{3}{\zeta\omega_{n}}
\end{align*}
}

\end{document}
2

You need to put braces around the entire construct that you want to have above/below in \underset if it contains more than one token.

enter image description here

\documentclass{article}

\usepackage{mathtools}

\begin{document}

\[
  \underset{(\delta=5\%)}{T_s} \cong\frac{3}{\zeta\omega_n}
\]

\end{document}

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.