Neco 2021 Further Mathematics Question 14
Practice objective / multiple choice question 14 from the 2021 Neco Further Mathematics examination.
Consider the matrix \( A = \begin{pmatrix} k & 2 & -1 \\ 3 & k & 4 \\ 5 & -2 & k \end{pmatrix} \).\n(a) Find all real values of \( k \) for which \( A \) is invertible.\n(b) For \( k = 1 \), compute the determinant of \( B = A^{2} - 3A + 2I \), where \( I \) is the \(3\times3\) identity matrix.
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About This Question
This is Neco 2021 Further Mathematics Question 14. It is one of the objective questions from the 2021 Neco Further Mathematics examination.
Difficulty level: Medium .
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