如何让\underset文本显示在带有下标的等式下方？我当前的代码产生以下输出：
代码
\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}
答案1
\underset如果它包含多个标记，则需要用括号将要包含上方/下方的整个构造括起来。
\documentclass{article}
\usepackage{mathtools}
\begin{document}
\[
\underset{(\delta=5\%)}{T_s} \cong\frac{3}{\zeta\omega_n}
\]
\end{document}