As x is a pure real number, but y only with imaginary part.
. J/ ~& b$ L! Z0 v& P: L- X8 _+ T公仔箱論壇So if want to compare these two numbers, it should compare there magnitude.
/ s' h' G1 T: O- Y" v. P公仔箱論壇1. x -> 0+0i
; ^! l% [8 y W. H, p/ }: F* g2. y -> 0+1i0 r7 r0 c7 F# l7 j2 f1 w
* s7 k) a+ |9 H& A% nMagnitude of x is |√(0^2 +0^2)| = 0
% \ J- s; v* }0 ~- w. ]Magnitude of y is |√(0^2+1^2)| = 1: j( {% i0 ]6 q2 x' C
. S1 b# V/ l- X2 n( y. R5 J# |) r; Rtvb now,tvbnow,bttvbSo, the magnitude of y >x |
發表於 2013-1-6 06:17 PM
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