Sebuah fungsi di definisikan dengan F(x) =10-3X².Jika Daerahnya asalnya{2,3,4,5,6}.tentukan daerah hasil dari fungsi tersebut

f(x) = 10 - 3x²
f(2) = 10 - 3(2²)
f(2) = 10 - 12
f(2) = -2
f(3) = 10 - 3(3²)
f(3) = 10 - 27
f(3) = -17
f(4) = 10 - 3(4²)
f(4) = 10 - 48
f(4) = -38
f(5) = 10 - 3(5²)
f(5) = 10 - 75
f(5) = -65
f(6) = 10 - 3(6²)
f(6) = 10 - 108
f(6) = -98
daerah hasil = {-2, -17, -38, -65, -98}

Jawab :

f(x) = 10 - 3x²
Domain : {2 , 3 , 4 , 5 , 6}
range = ... ?

1) f(2) = 10 - 3(2²) = -2
2) f(3) = 10 - 3(3²) = -17
3) f(4) = 10 - 3(4²) = -38
4) f(5) = 10 - 3(5²) = -65
5) f(6) = 10 - 3(6²) = -98

Range : {-2 , -17 , -38 , -65 , -98}