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3 and 4 . determinant and metrices — Maths STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceMaths3 and 4 . determinant and metrices1 Mark
MCQ
The matrix $\left[ {\begin{array}{*{20}{c}}2&5&{ - 7}\\0&3&{11}\\0&0&9\end{array}} \right]$is known as
  • A
    Symmetric matrix
  • B
    Diagonal matrix
  • ✓
    Upper triangular matrix
  • D
    Skew symmetric matrix
✓

Answer

Correct option: C.
Upper triangular matrix
c
(c) 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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