Question

Find x, if [2 x 2]\(\begin{bmatrix} 1 \\[0.3em] 4 \\[0.3em] 2 \end{bmatrix}\) = [3]

Answer 1

[2 + 4x + 4] = [3] 

⇒ 4x = 3 – 6 = -3 ; x = \(\frac{-3}{4}\)