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lilihurry
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2Â¥2014-02-25 17:28:42
feixiaolin
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Éèz=x+iy argz=¦°/3, z=x+isqrt(3)x ´úÈë|(z-1)/z|=a sqrt((x-1)^2+3x^2)/2/x=a, x>0 (x-1)^2+3x^2=4*a^2*x^2 4x^2-2x+1=4*a^2*x^2 4(1-a^2)x^2-2x+1=0 È¡xµÄÕý¸ù [ Last edited by feixiaolin on 2014-2-28 at 09:43 ] |
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