sai2236534

真是超級簡單

maninfat

e)None of the above

rubykwok

As x is a pure real number, but y only with imaginary part.tvb now,tvbnow,bttvb( u. X0 ]- o0 G) h
So if want to compare these two numbers, it should compare there magnitude.公仔箱論壇4 [+ Z0 \! ^4 @# d" U9 w( f1 @
1. x -> 0+0i
  t" U0 k) x  q8 H5 O  Q1 Vwww3.tvboxnow.com2. y -> 0+1i公仔箱論壇7 Z" r3 J; T9 P9 R2 V
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Magnitude of x is |√(0^2 +0^2)| = 0* F- n4 ]5 x8 y! ?0 B7 t3 z
Magnitude of y is |√(0^2+1^2)| = 1tvb now,tvbnow,bttvb$ d( G& L. y: c# D2 O( L2 U
公仔箱論壇: E) }1 N5 ?& {+ f# V8 e- [
So, the magnitude of y >x

rubykwok

其實唔知啱唔啱，我都係估吓估吓咋