Question

Satu lagi...
Dik: f(x)=5x-3
dit:tentukan b jika f(b)=2?

Answer 1

F(x) = 5x -3
f(b) = 5(b) -3 = 2
       = 5b -3 =2
       = 5b = 2 +3
       = 5b = 5
       = b = 5/5
       = b = 1
Jadi, nilai b = 1.

Answer 2

F(x)= 5x-3 
f(b)= 5b-3
=5b-3 =2
=5b = 2+3
=5b = 5
=b = 1

pembuktian=
f(1)= 5(1)-3 = 5-3 = 2