As x is a pure real number, but y only with imaginary part.公仔箱論壇3 b# [! z' X g( Y8 t! Z
So if want to compare these two numbers, it should compare there magnitude.
2 W8 |' `) i2 l4 S5 L |1. x -> 0+0i
4 y& p: @, ~1 f9 j4 @& M W6 f2. y -> 0+1i5.39.217.77:8898# H3 j; o# C4 O) N' I+ P
+ |0 N4 { r' _* f$ TMagnitude of x is |√(0^2 +0^2)| = 0( T1 } W' C3 ^& d% u* j4 x
Magnitude of y is |√(0^2+1^2)| = 1
" z6 C! `: ^' s j9 `# Q% k+ T: ltvb now,tvbnow,bttvb m; s. Z& B! v6 w" J$ W5 g
So, the magnitude of y >x |
發表於 2012-12-29 07:13 PM
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