3/4lg25+2^log2^3+lg2根号2
来源:学生作业帮助网 编辑:作业帮 时间:2024/05/24 04:08:46
3/4lg25+2^log2^3+lg2根号2
(3/4)lg5+2^(log2 3)+lg 2^(3/2) =(3/4)×2lg5+3+(3/2)lg2 =(3/2)lg5+(3/2)lg2+3 =(3/2)(lg5+lg2)+3 =(3/2)lg(2×5)+3 =(3/2)lg10+3 =3/2+3 =9/2
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来源:学生作业帮助网 编辑:作业帮 时间:2024/05/24 04:08:46
3/4lg25+2^log2^3+lg2根号2
(3/4)lg5+2^(log2 3)+lg 2^(3/2) =(3/4)×2lg5+3+(3/2)lg2 =(3/2)lg5+(3/2)lg2+3 =(3/2)(lg5+lg2)+3 =(3/2)lg(2×5)+3 =(3/2)lg10+3 =3/2+3 =9/2