1)suatu fungsi dirumuskan dengan rumuskan dengan rumus f(x) = 2x pangkat2 -1 . bayangan dari-3 adalah 2) jika f(x) = ax +b mAka nilai perubahan fungsi f(x) - f(

1.f(x) = 2x² - 1
f(-3) = 2 . (-3)² - 1
f(-3) = 2 . 9 - 1
f(-3) = 17

2. f(x) - f(x + 1) = ax + b - (a (x + 1) + b)
f(x) - f(x + 1) = ax + b - ax - a - b
f(x) - f(x + 1) = - a

Semoga membantu

[tex] \left[\begin{array}{ccc}1\end{array}\right]\\\\f(x) = 2x^2 - 1\\f(-3) = 2(-3)^2 - 1\\f(-3) = 2(9) - 1\\f(-3) = 18 - 1\\f(-3) = 17\\\\\\ \left[\begin{array}{ccc}2\end{array}\right]\\\\f(x) - f(x + 1)\\= ax + b - [(x + 1)a + b]\\= ax + b - (ax + a + b]\\= -a[/tex]