Maths Crossword Puzzle

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Across
  1. 3. Opposite process of differentiation
  2. 5. Symbol representing an unknown value
  3. 7. Distance around a circle
  4. 10. A trigonometric function representing opposite/hypotenuse
  5. 14. A polynomial with exactly two terms
  6. 15. Branch of mathematics dealing with change and motion
  7. 16. Mathematical statement that must be proved
Down
  1. 1. The theorem expressed as a² + b² = c²
  2. 2. Rate of change in calculus
  3. 4. The value dividing a circle into 360 parts
  4. 6. Value where a function approaches but may not reach
  5. 8. A function that is its own derivative
  6. 9. A value that does not change
  7. 11. Graph of a quadratic function
  8. 12. Ratio of adjacent side to hypotenuse
  9. 13. Reciprocal of the sine function