November 2018 1 6 Report
De las siguientes funciones f, definida cada una en su respectivo dominio, determine cuáles son inyectivas.

f(x) = 1 - x2, x ∈ R
f(x) = (x + 3)2 , x ∈ R
f(x) = 1x3 , x ∈ R
f(x) = x - 4 , x ∈ R
f(x) = 3x2 , x ∈ [0,∞)
f(x) = (1x + 4)/(6x + 2) , x ∈ R \ {-2/6}

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