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Lösung 3.2:4b

Aus Online Mathematik Brückenkurs 2

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We calculate what the expression will be


2−i+5+3i=2+5+−1+3i=7+2i 

and then take the magnitude:


7+2i=72+22=49+4=53 


NOTE: Note that it is not possible to take the magnitude of the terms individually


2−i+5+3i=2−i+5+3i 

Von „http://wiki.math.se/wikis/2009/bridgecourse2-TU-Berlin/index.php/L%C3%B6sung_3.2:4b“