As x is a pure real number, but y only with imaginary part.' _+ z2 p' G- }( C
So if want to compare these two numbers, it should compare there magnitude.
9 l# d" H6 c* h7 l( T5.39.217.77:88981. x -> 0+0itvb now,tvbnow,bttvb4 \. Z' B, W- } v' |/ b
2. y -> 0+1i1 _" `; L$ J" d( b, D
公仔箱論壇7 t G. B8 x4 |9 q$ w. T
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。* e! D6 k! ]& U s& Y9 I% @
Magnitude of y is |√(0^2+1^2)| = 1
8 o- p! b! g! U, a" H# @, _ j5.39.217.77:88982 e) p! M$ L. f. c( o* [8 R" b# K3 A
So, the magnitude of y >x |
發表於 2012-12-29 07:13 PM
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