Question

Compute the determinant of :
∣ ∣ ∣ −1 −4 −1 −2 ∣ ∣ ∣

Answer 1

Answer on Question # 41636 – Math – Matrix

Compute the determinant of the matrix

$$\left( \begin{array}{cc} -1 & -4 \\ -1 & -2 \end{array} \right)$$

Solution.

$$\left| \begin{array}{cc} -1 & -4 \\ -1 & -2 \end{array} \right| = (-1)(-2) - (-1)(-4) = 2 - 4 = -2.$$

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