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Homework Help
Calculus and Beyond Homework Help
Finding Magnitude of complex number expression
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[QUOTE="mkematt96, post: 5761512, member: 608898"] [h2]Homework Statement [/h2] We are given Z, and are asked to find the magnitude of the expression. See attached picture(s) [h2]Homework Equations[/h2] See attached pictures(s) [h2]The Attempt at a Solution[/h2] When I solved it on the exam, I did it the long way using De Moivre's theorem. I ended up making a few sign errors which cost me points. When my professor went over the exam, he did the problem as shown on the second picture with the purple pen writing. What I am wondering is why you can solve it this way? Why in the denominator you can just multiple the magnitude of both terms without having to evaluate it? [ATTACH=full]203453[/ATTACH] [ATTACH=full]203454[/ATTACH] [/QUOTE]
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Calculus and Beyond Homework Help
Finding Magnitude of complex number expression
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