As x is a pure real number, but y only with imaginary part.
% [ C X. I$ I5.39.217.77So if want to compare these two numbers, it should compare there magnitude.
4 F5 `+ u' x! Q: v+ F5.39.217.771. x -> 0+0i
8 E- ^' x! R' J6 o7 n" ]2. y -> 0+1i; x, S; F# s! L9 C
5.39.217.77& x$ |% R* e, |. P& w: A
Magnitude of x is |√(0^2 +0^2)| = 0% }! K* [4 W( Q# ~+ Y6 _
Magnitude of y is |√(0^2+1^2)| = 1
6 y! w$ k# _2 ]) F+ {( |公仔箱論壇4 G; W! I; D3 q8 v0 Z8 `' ^
So, the magnitude of y >x |
發表於 2012-12-29 07:13 PM
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