As x is a pure real number, but y only with imaginary part.5.39.217.77:8898. S1 Q O, |- } i
So if want to compare these two numbers, it should compare there magnitude.公仔箱論壇% G2 v- m( f* n
1. x -> 0+0i8 ? f. g- t3 l* h; b3 q8 ^
2. y -> 0+1i
% _- j+ U8 _, c- M- \tvb now,tvbnow,bttvb5.39.217.77:8898( D Q& q+ M8 I0 S' Z$ R8 ~& D
Magnitude of x is |√(0^2 +0^2)| = 0* G' O9 K. l3 W8 }+ b2 A& j4 Y
Magnitude of y is |√(0^2+1^2)| = 15.39.217.77:88986 G( B- o! S: ^- `8 B: R0 _
7 q/ `9 F* g% C- `% p C9 }So, the magnitude of y >x |
發表於 2012-12-29 07:13 PM
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