若f(x)是指数函数,且f(1+√3)*f(1-√3)=9,设g(x)是f(x)的反函数,那么g(-1+√10)+g(1+√10)等于..
问题描述:
若f(x)是指数函数,且f(1+√3)*f(1-√3)=9,设g(x)是f(x)的反函数,那么g(-1+√10)+g(1+√10)等于..
答
设f(x) = a^x
a^(1+√3+1-√3) = a^2 =9
a=3
f(x) = 3^x
g(x) = log (3) x
g(-1+√10)+g(1+√10) = log (3) 9 = 2