As x is a pure real number, but y only with imaginary part.www2.tvboxnow.com* b4 ]" j2 u+ |/ d
So if want to compare these two numbers, it should compare there magnitude.3 @9 w; a8 D+ p, r, }
1. x -> 0+0i
8 Z1 {$ y: B1 A; e. `' O& \公仔箱論壇2. y -> 0+1i
- g6 X. | p! P
/ g* ?% J, p8 KMagnitude of x is |√(0^2 +0^2)| = 0tvb now,tvbnow,bttvb1 R3 f; b2 R% r) o" r
Magnitude of y is |√(0^2+1^2)| = 1tvb now,tvbnow,bttvb5 R+ S1 O( d$ u+ [, s/ [
% j$ R; E, D; qSo, the magnitude of y >x |
發表於 2012-12-29 07:13 PM
| 
