(3/5)^x=7^(1-x)对指数题,求X,

来源:学生作业帮助网 编辑:作业帮 时间:2024/05/16 10:27:12
(3/5)^x=7^(1-x)对指数题,求X,

(3/5)^x=7^(1-x)对指数题,求X,
(3/5)^x=7^(1-x)
对指数题,求X,

(3/5)^x=7^(1-x)对指数题,求X,
(3/5)^x=7/7^x
(3/5)^x·7^x=7
(21/5)^x=7
x=log(21/5)7=log(4.2)7