As x is a pure real number, but y only with imaginary part.
+ x3 l" y7 y; u) L8 d7 ySo if want to compare these two numbers, it should compare there magnitude.
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2. y -> 0+1i
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2 q( J; g3 C- d: a+ c2 P9 q8 RMagnitude of x is |√(0^2 +0^2)| = 0 T" a# y1 K& U2 n0 n
Magnitude of y is |√(0^2+1^2)| = 1
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So, the magnitude of y >x |
發表於 2012-12-29 07:13 PM
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