CIIM 2022 Problem 2
- Day 1
Sea un vector de longitud 1 y sea una matriz con entradas reales tal que:
(i) Los vectores y también son de longitud 1.
(ii) El vector no es igual ni a ni a .
Demostrar que .
Nota: denota la traspuesta de la matriz , e es la matriz identidad de tamaño .
Official text Iberoamerican Interuniversity Mathematics Competition 2022 official paper, page 1. Quoted with source.
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