escreva os intervalos por definição e compreensão:
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Olá !!!..
![a) \\ \{x\in R/-5 \leq x \leq 11\}~~ou~~[-5,11] \\ \\ b) \\ \{x\in R/0 \leq x\ \textless \ 3\}~~ou~~[0,3[ \\ \\ c) \\ \{x\in R/-3\ \textless \ x\ \textless \ 3\}~~ou~~]-3,3[ \\ \\ d) \\ \{x\in R/2\ \textless \ x \leq 5\}~~ou~~]2,5] \\ \\ e) \\ \{x\in R/- \frac{1}{2} \leq x\ \textless \ \frac{2}{3} \}~~ou~~[- \frac{1}{2} , \frac{2}{3} [](https://tex.z-dn.net/?f=a%29+%5C%5C+%5C%7Bx%5Cin+R%2F-5+%5Cleq+x+%5Cleq+11%5C%7D%7E%7Eou%7E%7E%5B-5%2C11%5D+%5C%5C++%5C%5C+b%29+%5C%5C+%5C%7Bx%5Cin+R%2F0+%5Cleq+x%5C+%5Ctextless+%5C+3%5C%7D%7E%7Eou%7E%7E%5B0%2C3%5B+%5C%5C++%5C%5C+c%29+%5C%5C+%5C%7Bx%5Cin+R%2F-3%5C+%5Ctextless+%5C+x%5C+%5Ctextless+%5C+3%5C%7D%7E%7Eou%7E%7E%5D-3%2C3%5B+%5C%5C++%5C%5C+d%29+%5C%5C+%5C%7Bx%5Cin+R%2F2%5C+%5Ctextless+%5C+x+%5Cleq+5%5C%7D%7E%7Eou%7E%7E%5D2%2C5%5D+%5C%5C++%5C%5C+e%29+%5C%5C+%5C%7Bx%5Cin+R%2F-+%5Cfrac%7B1%7D%7B2%7D++%5Cleq+x%5C+%5Ctextless+%5C++%5Cfrac%7B2%7D%7B3%7D+%5C%7D%7E%7Eou%7E%7E%5B-+%5Cfrac%7B1%7D%7B2%7D+%2C+%5Cfrac%7B2%7D%7B3%7D+%5B "a) \\ \{x\in R/-5 \leq x \leq 11\}~~ou~~[-5,11] \\ \\ b) \\ \{x\in R/0 \leq x\ \textless \ 3\}~~ou~~[0,3[ \\ \\ c) \\ \{x\in R/-3\ \textless \ x\ \textless \ 3\}~~ou~~]-3,3[ \\ \\ d) \\ \{x\in R/2\ \textless \ x \leq 5\}~~ou~~]2,5] \\ \\ e) \\ \{x\in R/- \frac{1}{2} \leq x\ \textless \ \frac{2}{3} \}~~ou~~[- \frac{1}{2} , \frac{2}{3} [")
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