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.
4 N+ E2 q. S% x( ~0 Ltvb now,tvbnow,bttvbSo if want to compare these two numbers, it should compare there magnitude.公仔箱論壇. k- y( M$ ]& C9 H! V
1. x -> 0+0i
+ M3 X5 L3 \% |' f/ h% |2. y -> 0+1i' H1 o9 W$ ?/ O8 m1 F
5.39.217.76) ?8 j2 C5 o: ^9 y* E0 ^0 w
Magnitude of x is |√(0^2 +0^2)| = 0+ w9 o- L7 J2 [# y
Magnitude of y is |√(0^2+1^2)| = 16 Z! R5 G+ r5 k$ m' C5 T

( T& ]8 T% X0 |2 xtvb now,tvbnow,bttvbSo, the magnitude of y >x

rubykwok

其實唔知啱唔啱，我都係估吓估吓咋