question_answer

The function \[u\,\,(t-{{t}^{0}})=\left[ \begin{matrix}    1 & t>{{t}_{0}}  \\    0 & t<{{t}_{0}}  \\ \end{matrix} \right]\,\,difines\]

A)  unit step function          

B)  unit ramp function

C)  unit impulse function     

D)  none of these