If A =2 2 41 3 41 2 x is an idempotent matrix then
Question
If A =2 2 41 3 41 2 x is an idempotent matrix then
Solution
Para que la matriz sea idempotente, debe cumplir con la condición . Vamos a verificar esta condición paso a paso.
Dada la matriz :
Primero, calculamos :
Realizamos la multiplicación de matrices:
Simplificamos cada elemento de la matriz resultante:
Para que sea idempotente, debe ser igual a :
Igualamos los elementos correspondientes de las dos matrices:
Observamos que las igualdades 1, 2, 4 y 5 no se cumplen, lo que indica que la matriz no puede ser idempotente. Por lo tanto, no existe un valor de que haga que sea idempotente.
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