Question

Tlong bantuin jwab no.14 ajj + cara kerja.y yah..
Trimakasih

Answer 1

=  (f0f0f)(-5)
=  (f0f0(f(-5))

f(-5) = - x - 2 ( karena x = -5 dan lebih kecil dari 0)
        = -(-5) -2
        = 3

= (f0f)(3)
= f0(f(3))

f(3) = x + 2 (lebih besar dari 0 )
       = 3 + 2
       = 5

= f (5)

f(5) = x + 2
       = 5+2
       = 7

Maka hasilnya 7

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Nomor 13

g(x) = x+5
f(g(x)) = x^2 - 6
f(x+5) = x^2 - 6

Maka f(x) = (x-5)^2 -6
                 = x^2 -10x +25 -6
                 = x^2 - 10x +19

F(x-1) = (x-1)^2 - 10(x-1) +19
           = x^2 - 2x + 1 - 10x +10 + 19
           = x^2 -12x +30 (D)