didefinisikan fx=... (no. 12) sama JALANNYA/CARANYA yaa~ terimakasih~

f(x) = 5^x
y = 5^x
x = ^5log y
f-¹(x) = ^5log x
f-¹{g(25) - 3} = f-¹{25² + 3 - 3}
f-¹{625} = ^5log 625
= ^5log 5⁴
= 4