Question

huaaaaaaaaaaaa quest dari guru minta jwbnya yahg​

Answer 1

Verified answer

Penjelasan dengan langkah-langkah:

1. f(x) = x - 1

g(x) = 3x + 5

a. (fog)(x)

= f(g(x))

= (3x + 5) - 1

= 3x + 4

b. (gof)(x)

= g(f(x))

= 3(x - 1) + 5

= 3x - 3 + 5

= 3x + 2

2. f(x) = 2x + 5

g(x) = (x - 1)/(x + 4)

a. (fog)(x)

= 2(x - 1)/(x + 4) + 5

= (2x - 2)/(x + 4) + 5(x + 4)/(x + 4)

= (2x - 2 + 5x + 20)/(x + 4)

= (7x + 18)/(x + 4)

b. (gof)(x)

= ((2x + 5) - 1)/((2x + 5) + 4)

= (2x + 4)/(2x + 9)