Question

Find the determinant of the following matrix. [ 1 3 1] [2 1 -5] [3 -1 -4]

Answer 1

It's a lengthy procedure to detail it.

Review your course and Apply the here below determinant value and you will find the determinant of this matrix = -35
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A₁₁   A₁₂   A₁₃
A₂₁   A₂₂   A₂₃
A₃₁   A₃₂   A₃₃

DETERMINANT (A) =
A₁₁(A₂₂A₃₃ - A₃₂A₂₃) - A₁₂(A₂₁A₃₃ - A₂₃A₃₁) + A₁₃(A₂₁A₃₂ - A₂₂A₃₁
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