As x is a pure real number, but y only with imaginary part.公仔箱論壇% W8 t6 m, q' M% A3 D, w/ g
So if want to compare these two numbers, it should compare there magnitude.- u" X, g# R9 c
1. x -> 0+0i3 _! q; t4 q4 I( x: n* W
2. y -> 0+1i. i6 Z m# _. T* `" f+ }) U
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Magnitude of x is |√(0^2 +0^2)| = 0
6 `" H. S3 S3 K% l4 s公仔箱論壇Magnitude of y is |√(0^2+1^2)| = 1! F. p. G0 h, V9 c" r+ N! o
$ y6 c- P) b/ _% X: G公仔箱論壇So, the magnitude of y >x |
發表於 2012-12-29 07:13 PM
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