2.4 Standard Functions and their Graphs

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Solved Examples

  1. ∣−5∣−∣−2∣=5−2=3|-5| - |-2| = 5 - 2 = 3.
  2. [4.7]=4[4.7] = 4. For [−4.7][-4.7], the greatest integer less than -4.7 is -5. So, 4+(−5)=−14 + (-5) = -1.
  3. sgn(−10-10) = -1 (since inputs < 0 give -1).

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