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Determinante de $$$\left[\begin{array}{cc}2 t & t\\2 & 1\end{array}\right]$$$
Calculadora relacionada: Calculadora de matriz de cofactores
Tu entrada
Calcular $$$\left|\begin{array}{cc}2 t & t\\2 & 1\end{array}\right|$$$.
Solución
El determinante de una matriz 2x2 es $$$\left|\begin{array}{cc}a & b\\c & d\end{array}\right| = a d - b c$$$.
$$$\left|\begin{array}{cc}2 t & t\\2 & 1\end{array}\right| = \left(2 t\right)\cdot \left(1\right) - \left(t\right)\cdot \left(2\right) = 0$$$
Respuesta
$$$\left|\begin{array}{cc}2 t & t\\2 & 1\end{array}\right| = 0$$$A
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