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真是超級簡單
e)None of the above
As x is a pure real number, but y only with imaginary part.
+ s: n# r- q( I* a5 {) H: rSo if want to compare these two numbers, it should compare there magnitude.
, U- [5 u3 L; h/ e- ]% q5 x1. x -> 0+0i  z4 j/ R' L$ H- R
2. y -> 0+1i4 N8 j$ ~2 A1 B; C9 J
' E& t. z- r9 L
Magnitude of x is |√(0^2 +0^2)| = 0tvboxnow.com, A, O2 Z0 ^0 V  {9 Z! ?
Magnitude of y is |√(0^2+1^2)| = 1
. C& I+ Q+ b2 r: p+ G; O. b% [2 |. t1 m' s
So, the magnitude of y >x
其實唔知啱唔啱,我都係估吓估吓咋
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