Question about Thévenin's theorem homework

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nikola1912

Joined Oct 25, 2017
24
In this task I'm supposed to determine the value of current between points A and B (Iab). In order to do that I have to calculate the voltage between those 2 points. And in order to do that I have to calculate the value of current passing from point A to point B. But current I1 gets split in one point. So through capacitor C4 is passing current I2 instead of I1.

What my question is, how do I calculate the value of current I2? And did I correctly calculate the value of I1? And also did I define voltage Uab right?

The whole task is supposed to be done in complex numbers btw. Sorry if I misspelled something. Also I put a picture from the book if you can't see the values.
 

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