As x is a pure real number, but y only with imaginary part.
8 X* ]$ j! T% ySo if want to compare these two numbers, it should compare there magnitude.' W) s x: @, ]/ T2 b
1. x -> 0+0i
2 K2 e# G' u3 W l/ K$ [. l7 L2. y -> 0+1i
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Magnitude of x is |√(0^2 +0^2)| = 0
, l2 V5 n/ O4 n+ I1 z5 R5.39.217.77Magnitude of y is |√(0^2+1^2)| = 1公仔箱論壇5 K, `6 O/ Z+ l2 ?2 l1 g
5 J& t6 u! ? r' y- O( W1 b公仔箱論壇So, the magnitude of y >x |
發表於 2012-12-29 07:13 PM
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