Question

dada a função f (x) = x² + 1 determine f (f (2))

Answer 1

f(x) = x² + 1

f(2) = 2² + 1

f(2) = 4 + 1

f(2) = 5

f(f (2)) = x² + 1

f(f (2)) = 5² + 1

f(f (2)) = 25 + 1

f(f (2)) = 26