y1=(t1==0)

the meaning for this command to generate impulse how it will produce 1 at t1=0

Answer 1

[hosein Javan]

if "t1" is a vector like this:

t1 = [-2 -1 0 +1 +2]

then "t1==0" is a vector of same size which replaces any non-zero value by zero and any zero value by one:

t1 ==0

[0 0 1 0 0]