matrix vector multiplication complex number
7 views (last 30 days)
Show older comments
Sylvain Rousseau
on 13 Jun 2019
Commented: Sylvain Rousseau
on 13 Jun 2019
Hi,
A complex matrix - vector mutiplication yields to a wrong result.
Heer is the code :
M = [ 1 complex(1,1) ; complex(0,-1) 1 ; 2 0; -1 3]
b = [ 2 complex(1,-1)]';
y=M*b
The outcome obtaind manually is : [ 4 1-3*i 4 1-3*i]
The matlab result (which is wrong) : [ 2+2*i 1-1*i 4 1+3*i]
May I ask you some hints please ?
Regards
Sylvain
0 Comments
Accepted Answer
Torsten
on 13 Jun 2019
b = [ 2 ,complex(1,-1)].'
instead of
b = [ 2 ,complex(1,-1)]'
3 Comments
Torsten
on 13 Jun 2019
b = [ 2 ,complex(1,-1)].'
means that you take the transpose of the vector which gives
b = [2; complex(1,-1)]
b = [ 2 ,complex(1,-1)]'
means that you take the conjugate transpose of the vector which gives
b = [2; complex(1,1)]
More Answers (0)
See Also
Categories
Find more on Whos in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!