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

  • question_answer
    The matrix \[\left[ \begin{matrix}    2 & 5 & -7  \\    0 & 3 & 11  \\    0 & 0 & 9  \\ \end{matrix} \right]\]is known as [Karnataka CET 1999; Pb. CET 2001]

    A) Symmetric matrix

    B) Diagonal matrix

    C) Upper triangular matrix

    D) Skew symmetric matrix

    Correct Answer: C

    Solution :

    We know that if all the elements below the diagonal in the matrix are zero, then it is an upper triangular matrix.


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