Mathematics, 21.03.2021 02:10, janahiac09

Seja f:R⇒R uma função que tenha as seguintes propriedades: { f(x+y)=f(x) + f(y) + xy, ∀ x, y ∈ R
{ f(4)=10

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Seja f:R⇒R uma função que tenha as seguintes propriedades: { f(x+y)=f(x) + f(y) + xy, ∀ x, y ∈ R