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Mladinsilviuionut
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Rezolvati multimea : A={X∈N* / 2X-1≤7 }

Răspuns :

   
[tex]\displaystyle \\ 2x-1 \leq 7 \\ \\ 2x \leq 7+1 \\ \\ 2x \leq 8 \\ \\ x \leq \frac{8}{2} \\ \\ x \leq 4 \\ \\ x\in \{0;~1;~2;~3;~4\} \\ \\ \Longrightarrow~~ \boxed{A = \{0;~1;~2;~3;~4\} }[/tex]



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