Let f, g be two functions defined from R into R. Translate using quantifiers the following statements: 1. f is bounded above; 2. f is bounded; 3. f is even; 4. f is odd; 5. f is never equal to 0; 6. f is periodic; 7. f is increasing; 8. f is strictly increasing; 9. f is not the 0 function; 10. f does not have the same value at two different points; 11. f is less than g; 12. f is not less than 9.

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