(1)已知lg2=0.3010,lg3=0.4771,求lg根号108 (2)设3^x=4^y=3
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(1)已知lg2=0.3010,lg3=0.4771,求lg根号108 (2)设3^x=4^y=3
(1)已知lg2=0.3010,lg3=0.4771,求lg根号108
(2)设3^x=4^y=36,求2/x+1/y的值
(1)已知lg2=0.3010,lg3=0.4771,求lg根号108
(2)设3^x=4^y=36,求2/x+1/y的值
![(1)已知lg2=0.3010,lg3=0.4771,求lg根号108 (2)设3^x=4^y=3](/uploads/image/z/2822675-59-5.jpg?t=%EF%BC%881%EF%BC%89%E5%B7%B2%E7%9F%A5lg2%EF%BC%9D0.3010%2Clg3%EF%BC%9D0.4771%2C%E6%B1%82lg%E6%A0%B9%E5%8F%B7108+%EF%BC%882%EF%BC%89%E8%AE%BE3%5Ex%EF%BC%9D4%5Ey%EF%BC%9D3)
=1/2 lg108=1/2(lg(36)+lg(2))=1/2 (lg(4*9)+lg2)=1/2 (3lg(2)+2lg(3)) 再答: 错了=1/2 lg108=1/2(lg(36)+lg(3))=1/2 (lg(4*9)+lg3)=1/2 (2lg(2)+3lg(3))
再问: •﹏•不好意思,看不懂怎么写的啊……格式不是很会……
再答: Lg(a*b)=lga+lgb
再答: Lg(a^b)=blg(a)
再答: ........第二问是两边取lg
再问: •﹏•不好意思,看不懂怎么写的啊……格式不是很会……
再答: Lg(a*b)=lga+lgb
再答: Lg(a^b)=blg(a)
再答: ........第二问是两边取lg
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