Question

Sendo f : R → R uma função definida por f(x) = x2-1, calcule:f(1 elevado a 2)

Answer 1

$\boxed{f(x)~=~x^2~-~1}\\\\\\\\f(1^2)~=~\left(1^2\right)^2~-~1\\\\\\f(1^2)~=~1^{2\,.\,2}~-~1\\\\\\f(1^2)~=~1^4~-~1\\\\\\f(1^2)~=~1~-~1\\\\\\\boxed{f(1^2)~=~0}$