As x is a pure real number, but y only with imaginary part.公仔箱論壇+ Z9 O$ o- A( a+ p. w
So if want to compare these two numbers, it should compare there magnitude.
+ p9 P' Y3 d4 d公仔箱論壇1. x -> 0+0itvb now,tvbnow,bttvb9 \; s# n* b" ?% q& n
2. y -> 0+1i
8 @& H+ ?+ x3 P1 j8 P9 S0 r6 Z; ~, t) U2 [+ g+ C4 r3 q; W+ H
Magnitude of x is |√(0^2 +0^2)| = 0TVBNOW 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。7 q$ c3 v4 f+ c9 B
Magnitude of y is |√(0^2+1^2)| = 1TVBNOW 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。1 f7 a2 U0 V' K; W% B$ u; D
7 V3 j: c; t1 \. @ E( HSo, the magnitude of y >x |
發表於 2012-12-29 07:13 PM
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