jika f(2x)=3x²+2 maka f(x)=?

F(2x)=3x^2 + 2
f(X) = 3 x^2/ 2 + 2/2
= 1,5 x^2 + 1

*correctmeifimwrong

f(2x) = 3x^2 + 2
Permisalan :
2x = a
x = a/2

Maka :
f(a) = 3 . (a/2)^2 + 2
f(a) = 3 . (a^2/4) + 2
f(a) = 3/4 (a^2) + 2

[tex] f(x) = \dfrac{3}{4} x^{2} + 2 [/tex]