2的X次方等于9,log2(8/3)=Y.求X+2Y的值

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/09 00:15:18

2的X次方等于9,log2(8/3)=Y.求X+2Y的值
2的X次方等于9,log2(8/3)=Y.求X+2Y的值

2的X次方等于9,log2(8/3)=Y.求X+2Y的值
2^x=9
x=log2(9)
x+2y=log2(9)+2log2(8/3)=log2( 9*(8/3)^2
=log2(64)
=log2(2^6)
=6

2^x=9
X=log2(9),log2(8/3)=Y2代入
X+2Y=log2(9)+2log2(8/3)
=log2(9)+log2(64/9)
=log2(64)
=6

2^X=9
x=log2(9)
y=log2(8/3)
X+2y=log2(9)+2log2(8/3)=log2(64/9)*9=log2(64)=log2(2^6)=6