Talk:Time derivative
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Notational dispute[edit]
I dispute the sentence "Other shorthands include a subscripted t as in xt." While subscript notation can be used to refer to derivatives, I've never seen it used for a time derivative. The reason is that the notation xt is discrete-time notation for the level (not change) of x at time t.
Unless someone objects, I will delete this sentence. Please respond pro or con. Duoduoduo (talk) 19:46, 4 July 2010 (UTC)
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