As x is a pure real number, but y only with imaginary part.tvb now,tvbnow,bttvb7 w" Y9 a! g4 g- X7 w& e
So if want to compare these two numbers, it should compare there magnitude.TVBNOW 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 L$ q- `8 n4 W4 u, _
1. x -> 0+0i
. e/ g# }: {/ L, K# }2. y -> 0+1i P0 \8 _' T0 G
: H% g1 q/ n8 ^$ U/ P- jMagnitude of x is |√(0^2 +0^2)| = 0公仔箱論壇, M6 B$ z5 \- z& l# a
Magnitude of y is |√(0^2+1^2)| = 1
) ]# E9 m& l9 F2 G5 V
0 ~7 m. H+ B* [; ?7 {TVBNOW 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。So, the magnitude of y >x |
發表於 2012-12-29 07:13 PM
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