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        1. O(sh)0x1a0a
          13
          ԇ^|log3a1-x3|c|log3a1+x3|Ĵ
          ӑՓ(dng)3a1ͮ(dng)03a1ɷNrȥ^ֵ@2ʽ^c0ĴСP(gun)ϵ
          ⣺0x12NrӑՓ
          ٮ(dng)3a1a
          1
          3
          r
          |log3a1-x3|-|log3a1+x3|
          =|3log3a1-x|-|3log3a1+x|
          =3[-log3a1-x-log3a1+x]
          =-3log3a1-x2
          01-x21-3log3a1-x20
          ڮ(dng)03a10a
          1
          3
          r
          |log3a1-x3|-|log3a1+x3|
          =3[log3a1-x+log3a1+x]
          =3log3a1-x20
          C|log3a1-x3||log3a1+x
          cu}錦(sh)\(yn)|(zh)wF(xin)ӑՓĔ(sh)W(xu)˼룮
          (x)ϵд
          P(gun)(x)}

          ĿД(sh)W(xu) Դ

          O(sh)0x1ab(sh)t
          a2
          x
          +
          b2
          1-x
          Сֵ飨
          A4ab
          B2a2+b2
          Ca+b2
          Da-b2

          鿴𰸺ͽ>>

          ĿД(sh)W(xu) Դ

          O(sh)0x1a0a1^|loga1-x|c|loga1+x|ĴСҪ^^̣

          鿴𰸺ͽ>>

          ĿД(sh)W(xu) Դ

          1O(sh)0x1a0a1^|loga1-x||loga1+x|Ĵ

          2O(sh)a0x=
          1
          2
          a
          1
          n
          -a-
          1
          n
          ԇ(x+
          1+x2
          )
          n
          ֵ

          鿴𰸺ͽ>>

          ĿД(sh)W(xu) Դ2012˽BД(sh)W(xu)һ3.2(sh)(sh)(x)棩 }

          O(sh)0x1a0a1ԇ^|loga(1x)|c|loga(1x)|Ĵ

           

          鿴𰸺ͽ>>

          ͬ(x)Դ