Question

Matrices Class 12th .... need help​

Answer 1

Answer:

d) a is skew symmetric matrix

Answer 2

${\red {{\bold{ \huge \dag }}\bold {\huge{{\mathcal {\underline{Answer}}}} \dag}}}$

OPTION A IS CORRECT

BECAUSE,

$\bold {det \: A = 1 \times ( - 2 \times - 1)}$

$\bold {det \: A = 2}$

HOPE THIS IS HELPFUL