Help extracting data from solution matrix

1 次查看（过去 30 天）
Brian Hoblin
Brian Hoblin 2017-2-25
评论： Star Strider 2017-2-26
I have this simple code here,
if true
A=[1 0 0
0 1i -2i
0 -2i (3+2i)]
C=[-4.5
6
0]
B=[1i
2i
3i]
I=A\C
end
and it gives this answer,
if true
I =
-4.5000 + 0.0000i
5.5385 - 2.3077i
2.7692 + 1.8462i
end
I'd like to apply sqrt((real)^2+(imaginary)^2) and atand(imaginary/real) to the solution vector. Actually, I'm only concerned with row 3 of the solution vector. How would I do that? Thanks for the help.

请先登录，再回答此问题。

采纳的回答

Star Strider
Star Strider 2017-2-26
MATLAB has two functions that will do exactly what you want:
I = [-4.5000 + 0.0000i
5.5385 - 2.3077i
2.7692 + 1.8462i];
Amplitude = abs(I); % Units: Original Units
Phase = angle(I); % Units: Radians

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Logical 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by