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Determinati a∈R,stiind ca:

f:{-2,1,2,3}⇒R,f:(x)=ax-2 si A(1,-3) ∈Gf


Va rog ajutati-ma!!!


Răspuns :

f(x)=ax-2
A(1.-3)
f(a)=1×a-2=-3⇒a-2=-3⇒a=2-3⇒a=-1
a∈R
sucees