Linear algebra problems

Need a detailed solution, to compare to mine, please. Thank you.

Question

Linear algebra problems. Need a detailed solution, to compare to mine, please. Thank you.

:−
1
( )
= 2
1 1
=gt; | | =
3 =
( )= .
| | | | 2+3 = | | = 2 + 1 = √5 √5 √10 = 5 5 = √50 5√2 = 1
√2 1 + 3 = √10 =gt; = 4 ( )
= 4
2 ( )= = 3
=gt; | | =
1 . = | | | | 12 + 2 14 =…
Math