fungsi f(x)=7-2x f(2-n)

Jawab :
(f o g)(x) = f(g(x))
= f(x+3)
= 2(x+3)²+1
= 2(x² + 6x + 9) + 1
= 2x²+12x+19
(g o f)(x) = g(f(x))
= g(2x²+1)
= 2x² + 1 + 3
= 2x² + 4
(f o g)(1) = f(g(1))
= f(4)
= 2. (4)² +1
= 2.16 + 1
= 33
(g o f)(1) = g(f(1))
= g(3)
= 3 + 3
= 6 itu hasil nya