As x is a pure real number, but y only with imaginary part.- J& {8 n! f$ r3 U
So if want to compare these two numbers, it should compare there magnitude.
7 ]8 E3 O: [: A7 `1 U$ O+ q1. x -> 0+0iTVBNOW 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。& m% b! f' x! ~; ^6 j' g$ Z
2. y -> 0+1i
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! |$ `+ Q! c+ h% mMagnitude of x is |√(0^2 +0^2)| = 0tvb now,tvbnow,bttvb Z" w4 `% E& p
Magnitude of y is |√(0^2+1^2)| = 1
; i$ u' @/ |5 W- P' X) @' {8 `tvb now,tvbnow,bttvb
* u4 d H" {. PSo, the magnitude of y >x |
發表於 2012-12-29 07:13 PM
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