Question

fx) = 2x+3 dan fog(x) = 2x^2 + 2x + 5 , maka g(x) = ?

Answer 1

f


f(x) = 2x+3 dan fog(x) = 2x^2 + 2x + 5
f(g(x)) = 2x² + 2x + 5
2g(x) + 3 = 2x² + 2x + 5
2g(x) = 2x² + 2x + 2....disederhanakan
g(x) = x² + x + 1

Answer 2

fx) = 2x+3 dan fog(x) = 2x² + 2x + 5 , maka g(x) = ?
fog(x) = f g(x)
2x² + 2x + 5 =2(gx)+3
2x² + 2x + 2 =2(gx)
x² + x + 1 = g(x)