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Studiati injectivitatea functiei ,
f:R->R ,unde f(x)=x la puterea a 4-5


Răspuns :

x₁≠x₂, x₁⁴≠x₂⁴, x₁⁴-5 ≠ x₂⁴-5, f(x₁)≠ f(x₂), f injectiva