Răspuns:

Explicație pas cu pas:

f : {-2 ; -1 ; 0 ; 1 ; 2 ; 3} ---> A

f(x) = 3ˣ  ; Im f = ?

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x = -2 => f(-2) = 3⁻² = 1/3² = 1/9

x = -1 => f(-1) = 3⁻¹ = 1/3

x = 0 => f(0) = 3⁰ = 1

x = 1 => f(1) = 3¹ = 3

x = 2 => f(2) = 3² = 9

x = 3 => f(3) = 3³ = 27

Im f = A = {1/9 ; 1/3 ; 1 ; 3 ; 9 ; 27}