"One frequently encounters inputs that are zero before some reference time and that have a nonzero constant value thereafter. To treat such inputs mathematically, we define the unit step function, which is denoted by U(t). "
In the above, the expression "One frequently encounters" is confusing for me. What does it exactly mean?
Source:Modeling and Analysis of Dynamic Systems by Close/Frederick
Thank you.
Top answer
hhtt "One frequently encounters" The situation frequently happens.
— AlpheccaStars
hhtt "One frequently encounters" The situation frequently happens.
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