?1(?) = 1 + 2?−1 + 3?−2 and ?2(?) = 4 + 5?−1 + 6?−2. Use MATLAB to generate a sequence ?3(?) = ?1(?)?2(?). Utilize either the multiplication property or the convolution property. send me some other proper code if anyone have

>> x1=[1 2 3];

>> x2=[4 5 6];

>> x3=conv(x1,x2)

Output:

x3 =

4 13 28 27 18

[KALYAN ACHARJYA]

?1(?) = 1 + 2?−1 + 3?−2 ?

[Raj]

So,

x1(?) = 1 + 2?−1 + 3?−2 = 5z-2?

and x2(?) = 4 + 5?−1 + 6?−2= 11z+1?

Is that so?

then

x1=[5 -2]
x2=[11 1]
x3=conv(x1,x2)

is that what you are looking for?

[Umar Bhai]

no no this (1 + 2?−1 + 3?−2) is not 2z minus 1 + 3zminus 2..

here -1 and -2 are inverse power of z like below;

this is 2z raised to the power -1 + 3z raised to the power -2