- #1
FrogPad
- 810
- 0
I have two convolution problems, that I would like to be sure are right. If someone wouldn't mind the fun job of checking these, that would be great.
QUESTION:
Compute the convolution of [itex] x(t) [/itex] and [itex] h(t) [/itex] where:
1:
[tex] x(t) = u(t) [/tex]
[tex] h(t) = e^{-at}u(t), \,\,\, a>0 [/tex]
2.
[tex] x(t) = u(t) - u(t-T_1) [/tex]
[tex] h(t) = u(t) - u(t-T_2), \,\,\, T_1 > T_2 [/tex]
"ANSWER":
Let [itex] y(t) [/itex] be the convolution of x(t), h(t)
(1):
[tex] t < 0 [/tex]:
y(t) =0
[tex] t \geq 0 [/tex]:
[tex] y(t) = \int_{-\infty}^t e^{-a(t-\tau)}d\tau = \frac{1}{a}[/tex]
(2):
[tex] t < 0 [/tex] or [tex] t-T_2 > 0 [/tex]:
y(t) =0
[tex] t \geq 0 [/tex] and [tex] t-T_2 < 0 [/tex]:
[tex] y(t) = \int_0^t d\tau = t [/tex]
[tex] t-T_2 > 0 [/tex] and [tex] t<T_1 [/tex]:
[tex] y(t) = \int_{t-T_2}^t d\tau = T_2 [/tex]
If I need to show more steps, please let me know. Thanks!
QUESTION:
Compute the convolution of [itex] x(t) [/itex] and [itex] h(t) [/itex] where:
1:
[tex] x(t) = u(t) [/tex]
[tex] h(t) = e^{-at}u(t), \,\,\, a>0 [/tex]
2.
[tex] x(t) = u(t) - u(t-T_1) [/tex]
[tex] h(t) = u(t) - u(t-T_2), \,\,\, T_1 > T_2 [/tex]
"ANSWER":
Let [itex] y(t) [/itex] be the convolution of x(t), h(t)
(1):
[tex] t < 0 [/tex]:
y(t) =0
[tex] t \geq 0 [/tex]:
[tex] y(t) = \int_{-\infty}^t e^{-a(t-\tau)}d\tau = \frac{1}{a}[/tex]
(2):
[tex] t < 0 [/tex] or [tex] t-T_2 > 0 [/tex]:
y(t) =0
[tex] t \geq 0 [/tex] and [tex] t-T_2 < 0 [/tex]:
[tex] y(t) = \int_0^t d\tau = t [/tex]
[tex] t-T_2 > 0 [/tex] and [tex] t<T_1 [/tex]:
[tex] y(t) = \int_{t-T_2}^t d\tau = T_2 [/tex]
If I need to show more steps, please let me know. Thanks!