Question

Dada a função f: R x R de tal maneira que f(x)=$x^{2}$ + x + 1 , determine :

a) f(0)
b) f($\frac{2}{5}$)

Answer 1

a) f(0) = 0² + 0 + 1 = 1

b)f(2/5) = (2/5)² + 2/5 + 1  = 4/25 + 2/5 + 1 = (4 + 10 + 25)/25 = 39/25