Question

6. If the reduced row echelon form of the matrix of coefficients of a system of n linear equations in n unknowns is not the identity, then the system is inconsistent. (a) Always true (b) Sometimes true (c) Never true, i.e., false (d) None of the above 7. If a, b and c are integers and a = 0, then the matrix " I c v2 ) is nor is nonsingular. (a) Always true (b) Sometimes true (c) Never true, i.e., false (d) None of the above

Answer 1

fet the stem ofepuabiow 14 2 2x t The mahixof e above System is. 2. 2 2 1 i not an iolentit mahie but ta fystem har infinide sten oitent Again Let e yston ofefuaban is 2+2=3. The augmentedt ma fix f tte abeve bystem is. lA 2 2 inlowsisfent

b) ometines rue der al2 0 ane al2 is an irrabomal a o numben are infegens be is an infeger b (A) is hmigular alweqs La- Alwey fue