Fungsi f ditentukan oleh f(x) = ax + b Jika f(2) = 12 dan f(-3) = -23,Tentukan : A.nilai A dan B B.rumus fungsi tersebut
Bantu jawab dong plisss :( aku gamasuk sekolah kemaren,jadii ga denger penjelasan guru...yang baik mau bantuin aku mau ngucapin makasih byk deh,dan kujadikan terbaik supaya dapat point
teesde
Diket : f(x) = ax+b - f(2) = (a.2)+ b = 12 - f(-3)= (a.-3)+ b = -23
jwab: f(2) = 2a+b = 12 f(-3) =-3a+b=-23 dikurangi jadi, [2a-(-3a)]+[b-b] = [12-(-23)] 5a = 35 a = 7 f(2) = 2a+b = 12 2(7)+b = 12 14 + b = 12 b = 12 - 14 b = -2
- f(2) = (a.2)+ b = 12
- f(-3)= (a.-3)+ b = -23
jwab: f(2) = 2a+b = 12
f(-3) =-3a+b=-23
dikurangi jadi,
[2a-(-3a)]+[b-b] = [12-(-23)]
5a = 35
a = 7
f(2) = 2a+b = 12
2(7)+b = 12
14 + b = 12
b = 12 - 14
b = -2