Question

dada a função f(×)=ײ+1, calcule

f(2) - f (1)

f(3) + f (2)

f (3) × f(2)​

Answer 1

f(x) = x² + 1

Calculando o que se pede antes:

f(1) = 1² + 1
f(1) = 1 + 1
f(1) = 2

f(2) = 2² + 1
f(2) = 4 + 1
f(2) = 5

f(3) = 3² + 1
f(3) = 9 + 1
f(3) = 10

Logo,

f(2) - f (1)
= 5 - 2
= 3

f(3) + f (2)
= 10 + 5
= 15

f (3) × f(2)
= 10 * 5
= 50