\documentclass{article}
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\usepackage{mathtools,mathabx}
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\begin{document}
\begin{equation}
C(s)=\frac{U(s)}{E(s)}=K_{P}+\frac{K_{I}}{s^{\lambda}}+K_{D}s^{\mu} , (\lambda,\mu\vargeq 0)
\end{equation}
	
\end{document}