As x is a pure real number, but y only with imaginary part.; _3 ` L- \, B, ^# S! r/ u
So if want to compare these two numbers, it should compare there magnitude.公仔箱論壇! x0 D% w' k0 N3 y
1. x -> 0+0i5.39.217.76: @/ m W7 l2 {. @$ e8 e
2. y -> 0+1i
* y$ O/ l* q; c p4 R3 ^& vtvb now,tvbnow,bttvb# l4 i' K( Z- g, l2 H5 v1 C
Magnitude of x is |√(0^2 +0^2)| = 0tvb now,tvbnow,bttvb4 ]" C4 O5 U: v$ G
Magnitude of y is |√(0^2+1^2)| = 1$ D8 P/ u9 M. k( T* j) i
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So, the magnitude of y >x |
發表於 2012-12-29 07:13 PM
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