As x is a pure real number, but y only with imaginary part.' U- d: I- _" J h! p
So if want to compare these two numbers, it should compare there magnitude.公仔箱論壇$ z7 i! u8 l9 T' u7 W: i
1. x -> 0+0i
7 T! [9 `8 y* E8 r公仔箱論壇2. y -> 0+1i
) {6 h2 S( r* `/ ^: Q0 q, q2 n
0 T4 ?) Z6 ^* t# y3 h$ ?- ?tvb now,tvbnow,bttvbMagnitude of x is |√(0^2 +0^2)| = 0
8 d7 j& ^& D) H- r, e! U公仔箱論壇Magnitude of y is |√(0^2+1^2)| = 1tvb now,tvbnow,bttvb" n* e6 O* L; a2 s4 h$ Y2 h
. l' `( T* y9 P! e6 q/ N- Q3 s) _! R4 j5.39.217.77So, the magnitude of y >x |
發表於 2013-1-6 06:17 PM
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