1.

What is the expression for the digital frequency when r=1?

A. ( frac{1}{T} tan u2061( frac{ T}{2}) )
B. ( frac{2}{T} tan u2061( frac{ T}{2}) )
C. ( frac{1}{T} tan^{-1}( frac{ T}{2}) )
D. ( frac{2}{T} tan^{-1} u2061( frac{ T}{2}) )
Answer» E.


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