Question

Q[+50]

Diberikan fungsi f(x)=5x²+4x dan g(x)=2x
Maka fungsi (f o g)(x) dan (g o f)(x) nya?​

Answer 1

(f o g)(x) = f(g(x))

= f(2x)

= 5(2x)² + 4(2x)

= 5(4x²) + 4(2x)

= 20x² + 8x

(g o f)(x) = g(f(x))

= g(5x² + 4x)

= 2(5x² + 4x)

= 10x² + 8x