Question

The signal given by r(t) = At for t>0 r(t) = 0 for t<0​

princesses see my answer your question​

Answer 1

Answer:

The point t=0 is the exact point when time is zero.

This is helpful when dealing with discontinuous signals like the Heaviside steep function, u(t) :

Step-by-step explanation:

It symbolizes a key (switch) being turned on at t=0. Thee value is 0 for t<0 and 1 for t>0. In such situations, u(0) is not defined, but we know that u(0−)=0 and u(0+)=1 .

I hope it will help u ☺️☺️☺️