Question

Jika f(x)= x-1 dan (gof)( x) = x
Maka nilai dari g(0) - g(1) - g (2)-....g(9)=...

Answer 1

F(x) = x-1
(gof)(x) = x
g(f(x)) = x
g(x-1) = x
Mis : a = x-1
x = a+1

g(a) = a+1
g(x) = x+1

g(0) = 0 + 1 = 1
g(1) = 1 + 1 = 2
g(2) = 2 + 1 = 3 ... dst

Maka g(0) - g(1) - g(2) - ... g(9) = -53