The Everyday Mathematics Crossword

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Across
  1. 5. A statement proved on the basis of established facts
  2. 6. An equation of degree two
  3. 8. Rate of change of a function
  4. 10. A statistical measure of spread from the mean
  5. 11. Rectangular array of numbers in rows and column
  6. 13. A quantity having both magnitude and direction
  7. 15. Product of all positive integers up to a number
  8. 16. Value representing area under a curve
  9. 17. A line touching a curve at exactly one point
  10. 18. The set of all possible input values of a function
Down
  1. 1. Longest side of a right-angled triangle
  2. 2. Expression with variables raised to whole-number powers
  3. 3. An arrangement of objects where order matters
  4. 4. Numerical measure of how likely an event is
  5. 7. A scalar value computed from a square matrix
  6. 9. A line a curve approaches but never touches
  7. 12. Inverse operation of exponentiation
  8. 14. U-shaped curve traced by a quadratic function