deriving telegrapher's equation is phasor form

Thread Starter

sp2821

Joined Jan 8, 2014
23
Hello all,

I have a question on deriving telegrapher's equation in phasor form.
Below is derivation I found on one of microwave circuits class notes.
upload_2015-7-22_16-42-22.png

Final form of telegrapher's equation after canceling e^(j*omega) is
upload_2015-7-22_16-49-19.png

How is Re{complex #1}=Re{complex #2}+Re{complex #3} equal to (complex #1)=(complex #2)+(complex #3)?
What property of Re{} allows me to remove theoperator?

Thanks,
 
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