As x is a pure real number, but y only with imaginary part.
& |4 u% _) R V3 @tvb now,tvbnow,bttvbSo if want to compare these two numbers, it should compare there magnitude.+ ?# t5 ]7 |$ P7 s
1. x -> 0+0i K+ m9 U: p2 A! e7 L4 D
2. y -> 0+1i公仔箱論壇2 D* m5 `+ b, p( v, @
公仔箱論壇% Z# J7 g/ X; l9 J& J3 A
Magnitude of x is |√(0^2 +0^2)| = 0tvb now,tvbnow,bttvb6 p# y$ z B$ b' y4 S( p
Magnitude of y is |√(0^2+1^2)| = 1) \, V& h" n0 O3 {$ g
. w5 \* I3 \$ o/ Q0 J2 |6 P8 f
So, the magnitude of y >x |
發表於 2012-12-29 07:13 PM
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