diketahui fungsi f(x)=x^2-7x+12 dengan domain {-2,-1,0,1,2,3}

jawab

f(x)= x^2 -7x +12 --> f(x) = (x - 4)( - 3) 
x = -2, -2, 0, 1, 2  , 3

f(-2)= (-2)^2 - 7(-2) + 12
f (-2) = 4 + 26
f (-2)= 30

f (-1) = 1 +7 + 12 = 20
f(0)= 12
f(1) = 1-7+12 = 6
f(2) = 4 - 14 +12 = 2
f(3) = 9 - 21+12 = 0

kodomain = 0 ≤ y ≤ 12