if f(x)=2x-1 and g(x)=1/2(x+2) calculate
a)f(3)
b gf(3)
a)f(3)=2(3)-1=5
b)gf(3)=1/2(3+2)=3
2(3)-1=5
No. You did f(3) correctly, it is five.
Not g(f(3))=g(5)=....
a)f(3)
b gf(3)
a)f(3)=2(3)-1=5
b)gf(3)=1/2(3+2)=3
2(3)-1=5
Not g(f(3))=g(5)=....