dik f(x)= 1-x dan g(x)= x+3/x-3, maka nilai dari f(g(½)) adlh

tinggal masukkan x=1/2 ke g(x)
jadinya g(1/2) = (1/2)+3/(1/2)-3
g(1/2) = (7/2)/(-5/2) = -(7/5)

f(g(x)) = 1- (g(x)) = 1- (-7/5) = (5+7)/5 = 12/5 

semoga membantu

f(x) = 1 - x
g(x) = (x + 3) / (x - 3)
maka 

g(½)
= (½ + 3) / (½ - 3)
= (⁷/₂) / (-⁵/₂)
= -⁷/₅

f(-⁷/₅)
= 1 - (-⁷/₅)
= ⁵/₅ + ⁷/₅
= ¹²/₅

jadi f(g(½))
= ¹²/₅