Evaluate :

Engineering

Mathematics

Multiplication of Matrices

Symmetric and Skew Symmetric Matrices

Question

Evaluate : $[a b] [\begin{matrix} c \\ d \end{matrix}] + [a b c d] [\begin{matrix} a \\ b \\ c \\ d \end{matrix}]$

College PredictorLive

Know your College Admission Chances Based on your Rank/Percentile, Category and Home State.

Get your JEE Main Personalised Report with Top Predicted Colleges in JoSA

[a b]_{1 \times 2} {[\begin{array}{c} c \\ d \end{array}]}_{2 \times 1} + [a b c d]_{1 \times 4} {[\begin{array}{c} a \\ b \\ c \\ d \end{array}]}_{4 \times 1}

⇒ [ac bd]_1×1 + [a² + b² + c² + d²]_1×1

⇒ [a² + b² + c² + d² + ac + bd]_1×1

Please subscribe our Youtube channel to unlock this solution.