Question

Dik: f(x) : 2-x
g(x) : 1+x^2
h(x) : 3x
Dit : (h o g o f) (3)

Answer 1

(h•g•f)(x)
= h(g(f(x))))
= 3(g(f(x)))
= 3(1+(f(x)²))
= 3(1 + (2-x)²)
= 3(1 + (4 - 4x +x²)
= 3(x² - 4x + 5)

(h•g•f)(3) = 3(3² - 4.3 + 5)
= 3(9-12+5)
= 3(2)
= 6

Answer 2