?,?,?,?,...A,B,C,X,... - small latin letter - matrices;

?,?E,O - identity and zero matrices respectively (sizes are mentioned in context);

???Amn - matrix ?A of size ??mn, contains?m rows and ?n ?olumns;

??AT - transpose of ?A;

det?,|?|,?,??detA,|A|,?,?n - determinant of matrix ??An;

(?|?)(A|B) - augmented matrix of the system: AX=B;

??1A?1 - inverse matrix of ?A;

?(?),????(?)r(A),rank(A) - rank of matrix ?A.

Types of answers -- embedded answers, numerical answers, multiple choice. All numbers are integers. Empty cells have to be filled by integer numbers (together with its sign if number is negative). If result is ??{?1;?2;...;??}x?{a1;a2;...;an}, the elements of set form the increasing sequence: ?12<...>

Question 2 Given a matrix Not yet 35 + 1 2 I answered A = 2 x _ 1 0 . Find the values of 2 0 1 parameter x, given that A has rank 2. Marked out of 1.00 t7 Flag question Set parameter x via the list of its possible values (in order of Increase) Answer: x 6 {ED}