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Mar 29th, 2015
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  1. sqrt(x) -> pierwiastek kwadratowy z liczby "x"
  2.  
  3. sqrt(2) ^ -1 = 1 / sqrt(2)
  4.  
  5. Wyłączamy pierwiastek z mianownika:
  6.  
  7. (1 / sqrt(2)) * (sqrt(2) / sqrt(2)) = (1 * sqrt(2)) / (sqrt(2) * sqrt(2)) = sqrt(2) / 2
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