Tolongin plis nanti sore dikumpulkan:(((
Jawab:
16. Jawaban: 4 (E)
`17. Jawaban: (E)
Penjelasan dengan langkah-langkah:
16. Diketahui f(x) = x² – 7x + 3, tentukan f^-1 (-9):
f^-1 (x² – 7x + 3) = x
x² – 7x + 3 = -9
x² – 7x + 3 + 9 = 0
(x – 3)(x – 4) = 0
x = 3 atau x = 4
Maka,
f^-1 (-9) = x = 3 atau f^-1 (-9) = 4 (E)
17. f(g(x)) = =
y =
y(6x+1) = 3x + 4
6xy + y = 3x + 4
6xy – 3x = 4 – y
x(6y – 3) = 4 – y
x =
Maka,
(f o g)^-1 (x) = (E)