As x is a pure real number, but y only with imaginary part.
0 L5 O+ U p& m5 RSo if want to compare these two numbers, it should compare there magnitude.
9 y# g L; h( ]9 Y9 J& [1. x -> 0+0i
* q/ r3 j6 ~! h公仔箱論壇2. y -> 0+1i
3 \8 s X4 K- s公仔箱論壇7 n: f6 ?: j/ [2 S
Magnitude of x is |√(0^2 +0^2)| = 0公仔箱論壇 N/ y$ O* {( ]9 J a
Magnitude of y is |√(0^2+1^2)| = 1+ J8 p+ F: N9 n, P
公仔箱論壇( k, u/ K5 }9 J, \8 R& n
So, the magnitude of y >x |
發表於 2012-12-29 07:13 PM
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