As x is a pure real number, but y only with imaginary part.公仔箱論壇# u9 n. N* a x: f2 _ S( g
So if want to compare these two numbers, it should compare there magnitude.
, f% |% e# V% y- _6 U1. x -> 0+0i
J2 m3 m' M; V4 y' E公仔箱論壇2. y -> 0+1i
5 d7 Z i, _) w1 u, ^! ?1 @# M. a" E9 z% z3 H
Magnitude of x is |√(0^2 +0^2)| = 0& A6 D x8 h) [( d% A; {
Magnitude of y is |√(0^2+1^2)| = 1
% [7 p. q9 d$ |# w% qTVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。. _( t6 T7 f8 Q% _+ k' n+ m
So, the magnitude of y >x |
發表於 2012-12-29 07:13 PM
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