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3.5.1: Ejercicios 3.5
https://espanol.libretexts.org/Matematicas/Algebra_lineal/Fundamentos_del_%C3%81lgebra_Matricial_(Hartman)/03%3A_Operaciones_en_Matrices/3.05%3A_Regla_de_Cramer/3.5.1%3A_Ejercicios_3.5
$\text{det}(A)=-123,\:\text{det}(A_{1})=-492,\:\text{det}(A_{2})=123,\:\text{det}(A_{3})=492$ $\text{det}(A)=0,\:\text{det}(A_{1})=0,\:\text{det}(A_{2})=0,\:\text{det}(A_{3})=0$ \(\text{det}(A)=56... $\text{det}(A)=-123,\:\text{det}(A_{1})=-492,\:\text{det}(A_{2})=123,\:\text{det}(A_{3})=492$ $\text{det}(A)=0,\:\text{det}(A_{1})=0,\:\text{det}(A_{2})=0,\:\text{det}(A_{3})=0$ $\text{det}(A)=56,\:\text{det}(A_{1})=224,\:\text{det}(A_{2})=0,\:\text{det}(A_{3})=-112$ $\text{det}(A)=96,\:\text{det}(A_{1})=-960,\:\text{det}(A_{2})=768,\:\text{det}(A_{3})=288$ $\text{det}(A)=0,\:\text{det}(A_{1})=147,\:\text{det}(A_{2})=-49,\:\text{det}(A_{3})=-49$

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