Macdonald Ruiz
08/04/2024 · Elementary School
\( \left( \begin{array} { l } { n } \\ { p } \end{array} \right) = \left( \begin{array} { c } { n - 2 } \\ { p } \end{array} \right) + 2 \left( \begin{array} { l } { n - 2 } \\ { p - 1 } \end{array} \right) + \left( \begin{array} { l } { n - 2 } \\ { p - 2 } \end{array} \right) \)
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L'équation combinatoire indique que le coefficient binomial \( \binom{n}{p} \) peut être obtenu en ajoutant \( \binom{n-2}{p} \), deux fois \( \binom{n-2}{p-1} \) et \( \binom{n-2}{p-2} \). Cette relation est une propriété de la matrice de Pascal et des coefficients binomiaux.
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