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ÒòΪÊÇżº¯Êý£¬ËùÒÔf(x)=f(-x),ËùÒÔf(3/2-x)=f(x-3/2)=f(x+3/2),µÃ³öf(x)=f(x-3),f(log3(24))=f(log3(24)-3)=f(log3(24/27))=f(-log3(24/27))=f(log3(27/24))Õâ·ûºÏf(x)=3^x+1Ìõ¼þ£¬ËùÒÔf(log3(24))=3^(log3(27/24))+1=27/24+1=2.125
16Â¥2014-01-11 17:32:06
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laohuajiang

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4Â¥: Originally posted by xuguanghua at 2014-01-05 22:50:44
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log(3)24=log(3)(27-3)=log(3)[3^3(1-1/9)]=3+log(3)(1-1/9)=3+[-1/9-1/9^2-....]/ln3=2.893...
ÆäÖÐ ln3=ln(e+3-e)=ln3[1+(3-e)/e]=1+ln[1+(3-e)/e]=1+(3-e)/e-[(3-e)/e]^2/2+....=1.0986.....
ln(1+x)=x-x^2/2+x^3/3+.......
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5Â¥2014-01-05 23:25:04
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log(10)324=2.5105450102066121396075894024694
log(e)324=5.7807435157923293844154451906065
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2Â¥2014-01-05 21:55:35
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3Â¥2014-01-05 22:37:40
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xuguanghua

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4Â¥2014-01-05 22:50:44
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xuguanghua

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6Â¥2014-01-07 13:00:38
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7Â¥2014-01-08 21:38:50
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qwertmnbvc

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log3(24)=log3(3*8)=log3(3)+log3(8)=1+3log3(2)=1+3(log10(2)/log10(3))=1+3*0.301/0.477
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8Â¥2014-01-09 09:34:09
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xuguanghua

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9Â¥2014-01-09 10:42:45
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10Â¥2014-01-09 12:53:45
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