Question

Jika f(x) = x^2 +1
maka f(x+1) ?

Answer 1

f(x) = x² + 1

bila

f(x+1) = (x+1)² + 1
          = (x+1)(x+1) +1
          = x² + x + x + 1 + 1
          = x² + 2x + 2

Answer 2

F(x) = x² + 1
f(x+ 1) = (x + 1)² + 1
f(x + 1) = x² + 2x + 1 + 1
f(x + 1) = x² + 2x + 2