乡镇秋季秸秆禁烧方案:log2^x=log4^9
来源:百度文库 编辑:高考问答 时间:2024/07/08 22:07:42
log2^x=log4^9=log2^2 (3^2)=log2^3
所以x=3
log2^x=log4^9
log2^x=log2^2*9
2^x=2^2*9
x=2*9=18
log2^x=log4^9
=>xlog2=9log2^2
=>xlog2=18log2
=>x=18
as above
log2^x=log4^9=log2^2 (3^2)=log2^3
所以x=3
log2^x=log4^9
log2^x=log2^2*9
2^x=2^2*9
x=2*9=18
log2^x=log4^9
=>xlog2=9log2^2
=>xlog2=18log2
=>x=18
as above