W_Heisenberg
Full Member level 4
the thing is so easy, I have x = [1 1 1 1 1]
and then i am looking forward to its DFT as 5 point
so the code is as following:
x = [1 1 1 1 1]
W=[1 1 1 1 1;1 w w^2 w^3 w^4;1 w^2 w^4 w^6 w^8;1 w^3 w^6 w^9 w^12;1 w^4 w^8 w^12 w^16]
w=W*x
and the result now is :
5.0000
0
0.0000 - 0.0000i
0.0000 - 0.0000i
0.0000 + 0.0000i
it is right but what does 0000+0000 i implies here?
it is not zero? it is just too small?
and then i am looking forward to its DFT as 5 point
so the code is as following:
x = [1 1 1 1 1]
W=[1 1 1 1 1;1 w w^2 w^3 w^4;1 w^2 w^4 w^6 w^8;1 w^3 w^6 w^9 w^12;1 w^4 w^8 w^12 w^16]
w=W*x
and the result now is :
5.0000
0
0.0000 - 0.0000i
0.0000 - 0.0000i
0.0000 + 0.0000i
it is right but what does 0000+0000 i implies here?
it is not zero? it is just too small?