Question

bantuin kak jawab nomer yang genap aja, pake caranya​

Answer 1

Jawaban:

Pilihan Ganda:

12) f(x) = 2x² + 5x

g(x) = 1/x

(f o g)(2) = 2(1/2)² + 5(1/2) = 1/2 + 5/2 = 6/2 = A. 3

14) (h o g o f)(x) = h(g(f(x)))

g(f(x)) = 2x + 1

h(g(f(x))) = (2x + 1)³ = (2x + 1)(2x + 1)(2x + 1)

= (4x² + 4x + 1)(2x + 1) = 8x³ + 8x² + 2x + 4x² + 4x + 1

= B. 8x³ + 12x² + 6x + 1

Isian Singkat:

2) (g o f)(2) = ((2 + 1)/(2 - 3))² + ((2 + 1)/(2 - 3)) + 1

= (3/-1)² + (3/-1) + 1 = 9 - 3 + 1 = 7

4)

(g o f)(x) = -3x

2 - f(x) = -3x

-f(x) = -3x - 2

f(x) = 3x + 2