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2.7.1: Ejercicios 2.7
https://espanol.libretexts.org/Matematicas/Algebra_lineal/Fundamentos_del_%C3%81lgebra_Matricial_(Hartman)/02%3A_Aritm%C3%A9tica_Matricial/2.07%3A_Propiedades_de_la_Matriz_Inversa/2.7.01%3A_Ejercicios_2.7
$A^{-1}=\left[\begin{array}{cc}{-2}&{-5}\\{-1}&{-3}\end{array}\right],\quad (A^{-1})^{-1}=\left[\begin{array}{cc}{-3}&{5}\\{1}&{-2}\end{array}\right]$ \(A^{-1}=\left[\begin{array}{cc}{2}&{-5/2}\\{-1... $A^{-1}=\left[\begin{array}{cc}{-2}&{-5}\\{-1}&{-3}\end{array}\right],\quad (A^{-1})^{-1}=\left[\begin{array}{cc}{-3}&{5}\\{1}&{-2}\end{array}\right]$ $A^{-1}=\left[\begin{array}{cc}{2}&{-5/2}\\{-1}&{3/2}\end{array}\right],\quad (A^{-1})^{-1}=\left[\begin{array}{cc}{3}&{5}\\{2}&{4}\end{array}\right]$ $A^{-1}=\left[\begin{array}{cc}{-3}&{7}\\{1}&{-2}\end{array}\right],\quad (A^{-1})^{-1}=\left[\begin{array}{cc}{2}&{7}\\{1}&{3}\end{array}\right]$

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