Question

Jika f(x)=3^x, maka f(x+3) - f(x+2) : f(x+2) = ....? (dgn cara)

Answer 1

F(x) = 3^x
maka
f(x+3) = 3^(x+3) = 3³ . 3^x = 27.3^x
f(x+2) = 3 ^(x+2) = 3² . 3^x = 9. 3^x

maka 

f(x+3) - f(x+2) / f(x+2)
= 27.3^x - 9 . 3^x    /    9.3^x
= (27-9) . 3^x / 9.3^x
= 18.3^x  / 9.x^x
= 18/9
= 2