Question

Ma puteți ajuta va rog?❤️
Ex de clasa a 9 a ​

Answer 1

Răspuns:

f : ℝ → ℝ

f(x)=3x+7

g : ℝ → ℝ

g(x)=?

(gof)(x)=-6x-5 ∀ x ∈ ℝ

g(f(x))=-6x-5

g(3x+7)=-6x-5

notez t=3x+7

3x=7-t

x=(7-t)/3

g(t)=-6(7-t)/3-5

g(t)=-2(7-t)-5

g(t)=-14+2t-5

g(t)=2t-19

g(x)=2x'19