返回列表 回復 發帖
真是超級簡單
e)None of the above
As x is a pure real number, but y only with imaginary part.
7 L, }) @" c/ f) K9 l) mSo if want to compare these two numbers, it should compare there magnitude.
. B% e; Y- x( ^" q( ?1. x -> 0+0i$ u: c; Y% y; {( o% k% I
2. y -> 0+1i
: k" R" f! U  _1 U# N: R7 Ktvb now,tvbnow,bttvb$ C7 d/ V& ?0 F
Magnitude of x is |√(0^2 +0^2)| = 0( ?+ i* G" l- N  w
Magnitude of y is |√(0^2+1^2)| = 1公仔箱論壇) E( v0 w) {' o5 D/ K1 T
公仔箱論壇! o# A" X- w, w* [
So, the magnitude of y >x
其實唔知啱唔啱,我都係估吓估吓咋
返回列表