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  1. Jul 2020
  2. math.libretexts.org math.libretexts.org
    2.3: Implications
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    1. mio 23 Jul 2020
      e r

      It isn't clear what the roots are supposed to be. For the experienced reader it is completely obvious, but for the beginner this may occasionally cause problems: "...where r_1 /neq r_2, then r_1, r_2 are the two distinct..."

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    math.libretexts.org/Bookshelves/Combinatorics_and_Discrete_Mathematics/Book:_A_Spiral_Workbook_for_Discrete_Mathematics_(Kwong)/02:_Logic/2.03:_Implications