Math concepts

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Across
  1. 4. n!
  2. 10. undo a square
  3. 11. square roots of -1
  4. 12. basic quantity
  5. 14. y=mx+b
  6. 17. repeated addition
  7. 20. group of objects
  8. 22. divisible by two
  9. 23. undivisable number (integers)
  10. 24. common circle constant
  11. 25. found by multiplying
  12. 27. common base
  13. 31. programming langauges generally ___-index
  14. 32. derivatives and integrals
  15. 35. "first big number" after one thousand
  16. 38. "m" of a line
Down
  1. 1. ability to show something is true
  2. 2. big sum
  3. 3. two numbers together
  4. 5. x and y
  5. 6. something
  6. 7. collection of numbers for calculating
  7. 8. divide sin/cos
  8. 9. a way to undo powers*
  9. 13. calculate a function at a point by coming from both sides
  10. 15. a number not in fraction or radical form
  11. 16. simple rules for math
  12. 18. see * clue
  13. 19. greek letter for an angle
  14. 21. average
  15. 24. applied math in science
  16. 26. credited with finding "e"
  17. 28. the same
  18. 29. solution at zero
  19. 30. uses a division bar
  20. 33. number of the form a+bi
  21. 34. find angle in a sin()
  22. 36. see * clue and e clue
  23. 37. plus one