Class 12

Math

Algebra

Matrices

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If $A$ is a square matrix such that $A_{2}=I$, then find the simplified value of $(A−I)_{3}+(A+I)_{3}−7A$.

Which one of the following is square matrix?

If $A=[13 24 ]$, then which of the following is not an element of $A$?

Write the order of the following matrices :$D=[8−3]$

Construct a $2×3$ matrix $A=[a_{ij}]$ whose elements are given by $a_{ij}={i−ji≥ji+ji<j $

Write the order of the following matrices :$E=⎣⎡ −230 ⎦⎤ $

Solve for x and y if $(2x+yx−3y )=(513 )$

If A and B are two skew symmetric matrices of same order, then AB is symmetric matrix if ___________ .