How to solve three complex equations

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Najiya Omar
Najiya Omar 2019-6-28
评论： Najiya Omar 2019-6-30
please find the attached file for an example of the system
Thanks in advance
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Alex Mcaulley
Alex Mcaulley 2019-6-28
@Torsten, this symbol indicates the phase of the complex number
Walter Roberson
Walter Roberson 2019-6-29
Does the 1<0 (approximate rendering) indicate real value 1 complex phase 0, complex(1,0)?
Does j indicate sqrt(-1)?

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Alex Mcaulley
Alex Mcaulley 2019-6-28
Easy using matrix notation:
A = [1.46j,0.9j,-0.36j;0.36,-0.42,-1.345;0.9j,1.65j,0.42];
b = [1;0;1];
I = A\b
I =
-0.0059 - 0.4749i %I1
0.0079 - 0.3480i %I2
-0.0040 - 0.0184i %I3
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David Goodmanson
David Goodmanson 2019-6-30
编辑：David Goodmanson 2019-6-30
Hi Najiya,
Alex's answer has a typo in that the last entry in A is 0.42 rather than j0.42. So:
A = [j*[1.46,0.9,-0.36];[0.36,-0.42,-1.345];j*[0.9,1.65,0.42]];
b = [1;0;1];
I = A\b
I =
0.0000 - 0.4841i
0.0000 - 0.3357i
0.0000 - 0.0247i
I have no idea why I1 disagrees with what is in the book, although books have been known to be wrong. Unlike everything on this website.
Najiya Omar
Najiya Omar 2019-6-30
Hi David,
You got it for me!! It worked now. Thank you very much. Greatly appreciated.

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