Question

Jika f(x)=2x-3 dan gof (x)=4x^2+2x-3 brpkah g(x) nya ..??

Answer 1

Gof (x) = 4x² + 2x -3
g (f(x)) = 4x² + 2x -3
g (2x-3) = 4x² +2x - 3
g (a)    = 4(a+3/2)² + 2(a+3/2) -3
           = 4 ((a+3)²/ 2² ) + a+3 - 3
           = (a+3) (a+3) + a
           = a²+3a+3a+9+a
           =a²+7a+9
g(x) = x²+7x+9

Answer 2