exercice les applications...1 bac sm ... injective , surjective

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exercice les applications...1 bac sm ... injective , surjective

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chokran

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Merci

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Kan momkin nbynoha wach injective wla la ghir mn tmrin li 9bel khrjat lina f(a)=f(b) => a=b ou ab=1 khas tkhrj lina ghir a=b ila khrjat 7aja akhra rah machi injective.

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