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Determinante de $$$\left[\begin{array}{cc}3 t^{2} & 1\\6 t & 0\end{array}\right]$$$
Calculadora relacionada: Calculadora de matriz de cofactores
Tu aportación
Calcular $$$\left|\begin{array}{cc}3 t^{2} & 1\\6 t & 0\end{array}\right|$$$.
Solución
El determinante de una matriz de 2x2 es $$$\left|\begin{array}{cc}a & b\\c & d\end{array}\right| = a d - b c$$$.
$$$\left|\begin{array}{cc}3 t^{2} & 1\\6 t & 0\end{array}\right| = \left(3 t^{2}\right)\cdot \left(0\right) - \left(1\right)\cdot \left(6 t\right) = - 6 t$$$
Respuesta
$$$\left|\begin{array}{cc}3 t^{2} & 1\\6 t & 0\end{array}\right| = - 6 t$$$A