JEE Main & Advanced Mathematics Determinants & Matrices Question Bank Types of matrices, Algebra of matrices

  • question_answer
    If \[A=\left[ \begin{matrix}    1 & 0 & 0 & 0  \\    2 & 3 & 0 & 0  \\    4 & 5 & 6 & 0  \\    7 & 8 & 9 & 10  \\ \end{matrix} \right]\], then A is

    A) An upper triangular matrix

    B) A null matrix

    C) A lower triangular matrix

    D) None of these

    Correct Answer: C

    Solution :

    Since a square matrix A whose elements \[{{a}_{ij}}=0\]for\[i<j\]. Then A is the lower triangular matrix.


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