Functions in maths, please help see image, need help on ff(3) and gf
Functions in maths, please help see image, need help on ff(3) and gf
F(3)= 3(3)-1
F(3)= 8
Gf(x)=2x+4
0= 2x+4
Subtract 4 from each side
-4=2x
Divide each side by 2
-2=x