Задачи по школьной математике. Неравенства с модулем II

Неравенства с модулем II

  1. \(|x-4|<0,1\)
  2. \(|x-4|>0,2\)
  3. \(|x+3|<1\)
  4. \(|x+3|>1\)
  5. \(|x+2|<0,5\)
  6. \(|x+2|>0,5\)
  7. \(|2x-5|<1\)
  8. \(|2x-5|>1\)
  9. \(|x-1|<2x-5\)
  10. \(3x>2-|3-x|\)
  11. \(5x-7<|x+2|\)
  12. \(|5x-3|>6x-2\)
  13. \(|x-3|>2x\)
  14. \(|4x+2|>5x+3\)
  15. \(|2x-2|>3x+2\)
  16. \(|x^2+x-20|\leq x^2+x-20\)
  17. \(3x^2-|10x-3|>0\)
  18. \(|2x^2-x-10|>|x^2-8x-22|\)
  19. \(\displaystyle|\frac{3-2x}{1+x}|<2\)
  20. \(\displaystyle|\frac{2x+3}{5x-2}|<3\)
  21. \(-\displaystyle\frac{2}{|x|+1}\geq |x|-2\)
  22. \(\displaystyle\frac{5}{|3-x|+4}>|3-x|\)
  23. \(|2x+1|+|3x+2|\leq 5x+3\)
  24. \(|2-5x|+|x+1|\geq x+3\)
  25. \(|x-1|\leq |2x-3|-|x-2|\)
  26. \(|5x-1|-|4x+2|\leq |x-3|\)
  27. \(|2x+5|+|3x-7|>|4x+1|\)
  28. \(x^2+|x-1|\leq 5\)
  29. \(|x+2|+3-x^2\leq 0\)
  30. \(|x^2-3|+x^2+x<7\)
  31. \(|2x-|x-2||<3\)
  32. \(||3x+1|+x+1|\geq 2\)
  33. \(|2x+1-|3x+1||\leq x+2\)
  34. \(|x^2-|x^2+x||>11\)
  35. \(||2x^2-x|-3|\leq2x^2+x+5\)
  36. \(||x^3-x-1|-5|\geq x^3+x+8\)
  37. \(|\sqrt{x+2}-\sqrt{x+3}|\leq 1\)

Ответы

  1. (3,9; 4,1)
  2. \((-\infty; 3,8)\cup (4,2; +\infty) \)
  3. (-4; -2)
  4. \((-\infty; -4)\cup (-2;+\infty)\)
  5. (-2,5; -1,5)
  6. \((-\infty; -2,5)\cup (-1,5; +\infty)\)
  7. (2; 3)
  8. \((-\infty; 2)\cup (3;+\infty)\)
  9. \((4; +\infty)\)
  10. \((-0,5; +\infty)\)
  11. \((-\infty; 2,25)\)
  12. \((-\infty; 5/11)\)
  13. \((-\infty; 1)\)
  14. \((-\infty; -5/9)\)
  15. \((-\infty; 0)\)
  16. \((-\infty; -5]\cup [4;+\infty)\)
  17. \((-\infty; (-5-\sqrt{34})/3)\cup ((-5+\sqrt{34})/3; 1/3)\cup (3; +\infty)\)
  18. \((-\infty; -4)\cup (-3; (9-\sqrt{465})/6)\cup ((9+\sqrt{465})/6; +\infty)\)
  19. \((1/4; +\infty)\)
  20. \((-\infty; 3/17)\cup (9/13; +\infty)\)
  21. [-1; 1]
  22. (2;4)
  23. \([-1/2; +\infty)\)
  24. \((-\infty; 0]\cup [4/5; +\infty)\)
  25. \((-\infty; 1]\cup [2; +\infty)\)
  26. \((-\infty; +\infty)\)
  27. \((-\infty; 2,2)\cup (3; +\infty)\)
  28. \([(1-\sqrt{17})/2; 2]\)
  29. \((-\infty; (1-\sqrt{21})/2]\cup [(1+\sqrt{21})/2; +\infty)\)
  30. (-5/2; 2)
  31. (-1/3; 5/3)
  32. \((-\infty; -1]\cup [0; +\infty)\)
  33. \([-2/3; +\infty)\)
  34. \((-\infty; -11)\cup (11; +\infty)\)
  35. \([-4; +\infty)\)
  36. \((-\infty; -\sqrt[3]{6}]\)
  37. \([-2; +\infty)\)