$(i) x(-t) \\ (ii) x(t+6) \\ (iii) x(3t) \\ (iv) x(t/2) $

Mumbai University > EXTC > Sem 4 > Signals and Systems

Marks : 10

Year : DEC 2014

(i) To find x(-t), we use Folding property i.e to get –t we draw the mirror image of the signal x(t).

(ii) To find x(t+6), we use shifting property i.e put $t+6=0 ∴ t= -6$. So the origin of the signal starts at t=-6.

(iii) To find x(3t), we use scaling property i.e to get 3t we divide each value of t by 3.

(iv) To find x(t/2), we use scaling property i.e to get t/2 we multiply each value of t by 2.