|
MTM[iztrans] - inverse Z transform
|
|
Calling Sequence
|
|
iztrans(M)
iztrans(M,n)
iztrans(M,z,n)
|
|
|
Parameters
|
|
|
M
|
-
|
array or expression
|
|
n
|
-
|
variable
|
|
z
|
-
|
variable
|
|
|
|
|
|
Description
|
|
|
•
|
The iztrans(M) function computes the element-wise inverse Z transform of M. The result, R, is formed as R[i,j] = iztrans(M[i,j], t, s).
|
|
•
|
f = iztrans(F) is the inverse Z transform of the scalar F with the default independent variable z. If F is not a function of z, then F is assumed to be a function of the independent variable returned by findsym(F,1). The default return is a function of n.
|
|
•
|
If F = F(n), then iztrans returns a function of k.
|
|
•
|
iztrans(F,k) makes F a function of the variable k instead of the default n.
|
|
•
|
iztrans(F,w,k) takes F to be a function of w instead of the default z. The summation is then with respect to k.
|
|
|
|
Examples
|
|
|
>
|
|
|
>
|
|
|
| (1) |
|
>
|
|
|
| (2) |
|
>
|
|
|
| (3) |
|
>
|
|
|
| (4) |
|
>
|
![M := Matrix([z/(z-2), t*z/(z-2*t)])](/support/helpjp/helpview.aspx?si=7642/file04834/math164.png)
|
|
>
|
|
|
![Matrix([[2^n, 2^n*t^n*t]])](/support/helpjp/helpview.aspx?si=7642/file04834/math171.png)
| (5) |
|
|
Download Help Document
Was this information helpful?
