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Also cover record equations non-normatively
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henrikt-ma committed Apr 1, 2021
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Expand Up @@ -1470,6 +1470,7 @@ \subsection{Discrete-Time Expressions}\label{discrete-time-expressions}
\end{nonnormative}

For a scalar equation \lstinline!expr1 = expr2! where neither expression is of base type \lstinline!Real!, both expressions must be discrete-time expressions.
For a record equation, the same rule applies to the scalar elements of the equation.

\begin{nonnormative}
The rule follows from the observation that a discrete-valued equation does not provide sufficient information to solve for a continuous-valued variable.
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