grandes-ecoles 2021 Q1

grandes-ecoles · France · centrale-maths1__psi Proof Direct Proof of a Stated Identity or Equality

Justify that, for every natural integer $k$, $p _ { 1 } ^ { ( k ) } + \cdots + p _ { n } ^ { ( k ) } = 1$.

Justify that, for every natural integer $k$, $p _ { 1 } ^ { ( k ) } + \cdots + p _ { n } ^ { ( k ) } = 1$.