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Text File  |  1993-07-16  |  110b  |  6 lines
  1. cot(0) := discont
  2. cot(zero) := inf
  3. cot(-zero) := -inf
  4. cot(pi/2) := 0
  5. cot(x_) := if(isnumber(x),1/tan(x))
  6.