As x is a pure real number, but y only with imaginary part.os.tvboxnow.com, R3 [2 Z" p/ f' `6 o3 e- L
So if want to compare these two numbers, it should compare there magnitude.公仔箱論壇$ i# z" f* c# A5 P. _2 k) N
1. x -> 0+0i
1 I) O4 e3 w! ^3 Qtvb now,tvbnow,bttvb2. y -> 0+1i/ [. |7 ^' u+ ? r( p5 U
tvb now,tvbnow,bttvb0 i8 [$ s A# @
Magnitude of x is |√(0^2 +0^2)| = 0
- f- a4 ]! N% Q8 v+ HMagnitude of y is |√(0^2+1^2)| = 1
* S$ u* ]; f. D( b8 v: {6 Y5 W s5 ktvb now,tvbnow,bttvbos.tvboxnow.com& I; p7 o# u3 R+ \0 `( d, S
So, the magnitude of y >x |
發表於 2012-12-29 07:13 PM
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