As x is a pure real number, but y only with imaginary part.: D4 B" q2 l$ k' n4 y% V/ Y
So if want to compare these two numbers, it should compare there magnitude.) T# r4 ?3 x: W$ _; E) r
1. x -> 0+0i
& X& q' G; Q$ C1 t2. y -> 0+1i) s B0 J+ v3 y: C6 `* |( X
公仔箱論壇- @- [* s* |* ^
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。# o* w6 k+ M0 o7 y1 \! o
Magnitude of y is |√(0^2+1^2)| = 19 O2 A* E0 v. U, Y( O
3 `7 J, E7 \: k$ K/ w9 f1 U: z
So, the magnitude of y >x |
發表於 2012-12-29 07:13 PM
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