Dik f(x)=4-2x,g(x)=3x-1,danh(x)=5x+2 tentukan A. (Fogoh (3)) B.(gofoh(2)) C.(hogof(1))

a. (f o g o h(3)) = f o g (h(3))
===========> = f o g (5(3) + 2)
===========> = f (g (15 + 2))
===========> = f (g (17))
===========> = f (3 (17) - 1)
===========> = f (51 - 1)
===========> = f (50)
===========> = 4 - 2 (50)
===========> = 4 - 100 = -96

b. (g o f o h(2)) = g o f (h(2))
===========> = g o f (5(2) + 2)
===========> = g (f (10 + 2))
===========> = g (f (12))
===========> = g (4 - 2(12))
===========> = g (4 - 24)
===========> = g (-20)
===========> = 3 (-20) - 1
===========> = -60 - 1 = -61

c. (h o g o f(1)) = h o g (f(1))
===========> = h o g (4 - 2(1))
===========> = h (g (4 -2))
===========> = h (g (2))
===========> = h (3(2) - 1)
===========> = h (6 - 1)
===========> = h (5)
===========> = 5(5) + 2
===========> = 25 + 2 = 27