Question

Diketahui f(x)=10^x+1
Tentukan fungsi inversnya

Answer 1

F(x) = 10^(x+1) = 10^x * 10
y = 10^x * 10
y/10 = 10^x

x = log (y/10) = log y - log 10 = log y - 1
Jadi f(x) invers = log x - 1