Evaluate : [2-1 3][431] MATRICES Mathematics and Statistics

Exercise 2.3 | Q 1.2 | Page 55

QUESTION

Evaluate : ${\displaystyle [2-1 3]\left[\begin{array}{c}4\\ 3\\ 1\end{array}\right]}$

${\displaystyle }$

SOLUTION

${\displaystyle [2-1 3]\left[\begin{array}{c}4\\ 3\\ 1\end{array}\right]}$

= [2(4) –1(3) + 3(1)]
= [8 – 3 + 3]
= [8].