Question

И 1) (-8; 6] x [-5; 8); 2) (-o; 0] [-9; 3); 3) (-00; -2] [-2; 7];​

Answer 1

Ответ:

А фото есть?..

...............

Answer 2

It seems like you're providing interval notation for three different sets. Let's break them down:

1. (-8; 6] x [-5; 8): The first set, (-8; 6], represents all real numbers greater than -8 and less than or equal to 6. The square bracket on the right side indicates that 6 is included in the set. The second set, [-5; 8), represents all real numbers greater than or equal to -5 and less than 8. The round bracket on the right side indicates that 8 is excluded from the set. The Cartesian product "x" between these two sets indicates all possible pairs of numbers where the first number is from the first set and the second number is from the second set.

2. (-∞; 0] x [-9; 3): The first set, (-∞; 0], represents all real numbers less than or equal to 0. The minus infinity symbol (∞) indicates that there is no lower bound to this set. The second set, [-9; 3), represents all real numbers greater than or equal to -9 and less than 3. The round bracket on the right side indicates that 3 is excluded from the set. The Cartesian product "x" between these two sets indicates all possible pairs of numbers where the first number is from the first set and the second number is from the second set.

3. (-∞; -2] x [-2; 7]: The first set, (-∞; -2], represents all real numbers less than or equal to -2. The minus infinity symbol (∞) indicates that there is no lower bound to this set. The second set, [-2; 7], represents all real numbers greater than or equal to -2 and less than or equal to 7. The square brackets on both sides indicate that -2 and 7 are included in the set. The Cartesian product "x" between these two sets indicates all possible pairs of numbers where the first number is from the first set and the second number is from the second set.

If you have any further questions or need additional clarification, please let me know!