f(X)的定义域为{x│x>0}且f(xy)=f(x)+f(Y)若f(9)=8.求f(3)

来源:学生作业帮助网 编辑:作业帮 时间:2024/05/08 01:43:00
f(X)的定义域为{x│x>0}且f(xy)=f(x)+f(Y)若f(9)=8.求f(3)

f(X)的定义域为{x│x>0}且f(xy)=f(x)+f(Y)若f(9)=8.求f(3)
f(X)的定义域为{x│x>0}且f(xy)=f(x)+f(Y)若f(9)=8.求f(3)

f(X)的定义域为{x│x>0}且f(xy)=f(x)+f(Y)若f(9)=8.求f(3)
f(9)=f(3*3)=f(3)+f(3)=8=>f(3)=4