Mathematics

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Across
  1. 3. the mean of the two middle values
  2. 5. maximum extent of a vibration
  3. 7. another term for absolute value
  4. 8. f(x)=a(1+r)t (exponential ......)
  5. 9. point at which a function takes an infinite value
Down
  1. 1. the logical complement
  2. 2. whole number
  3. 4. famous mathematician
  4. 6. set of numbers arranged in rows and columns so as to form a rectangular array