sketch v(t)=A rect ((t-T/2)/T) + B((t-3T/2)/T)?

Answer 1

from time 0 to T, v(t) = (A/T)
from time T to 2T, v(t) = (B/T)
all else v(t) = 0

there may be some scaling ... I'd have to look it up since I don't remember, but I'm presuming this is a homework problem, so you can look it up in your textbook.