해법
단순화 −0.43log2(0.43)−0.57log2(0.57)
해법
−log2(25570.57⋅430.43)+2
+1
소수
0.98581…솔루션 단계
−0.43log2(0.43)−0.57log2(0.57)
−0.43log2(0.43)=−0.43log2(10043)
0.57=10057
=−0.43log2(10043)−0.57log2(10057)
−0.43log2(10043)=−log2((10043)0.43)
−0.57log2(10057)=−log2((10057)0.57)
=−log2((10043)0.43)−log2((10057)0.57)
로그 규칙 적용: loga(x)+loga(y)=loga(xy)−log2((10057)0.57)−log2((10043)0.43)=log2((10057)0.57(10043)0.43)=−log2((10057)0.57(10043)0.43)
(10057)0.57(10043)0.43간소화하다 :100570.57⋅430.43
=−log2(100570.57⋅430.43)
로그 규칙 적용: loga(yx)=loga(x)−loga(y)log2(100570.57⋅430.43)=log2(570.57⋅430.43)−log2(100)=−(log2(570.57⋅430.43)−log2(100))
log2(570.57⋅430.43)=0.57log2(57)+0.43log2(43)
=−((0.57log2(57)+0.43log2(43))−log2(100))
규칙 적용: (a)=a(0.57log2(57)+0.43log2(43))=0.57log2(57)+0.43log2(43)=−(0.57log2(57)+0.43log2(43)−log2(100))
log2(100)=2+2log2(5)
=−(0.57log2(57)+0.43log2(43)−(2+2log2(5)))
분배 법칙 적용: −(a+b)=−a−b−(2+2log2(5))=−2−2log2(5)=−(0.57log2(57)+0.43log2(43)−2−2log2(5))
0.57log2(57)=log2(570.57)
0.43log2(43)=log2(430.43)
−2log2(5)=−log2(52)
=−(log2(570.57)+log2(430.43)−2−log2(52))
log2(570.57)+log2(430.43)−log2(52)=log2(25570.57⋅430.43)
=−(log2(25570.57⋅430.43)−2)
분배 법칙 적용: −(a−b)=−a+b−(log2(25570.57⋅430.43)−2)=−log2(25570.57⋅430.43)+2=−log2(25570.57⋅430.43)+2