3 votes 3 votes Let $A$ be a $3\times 4$ matrix.The system of equations $Ax=0$ has unique solution Infinite solution No solution Exactly 2 solutions Linear Algebra matrix + – Avik Chowdhury asked Mar 22, 2018 edited Mar 23, 2018 by Sukanya Das Avik Chowdhury 3.2k views answer comment Share Follow See all 0 reply Please log in or register to add a comment.
Best answer 1 votes 1 votes ans is option B infinite solution.Because rank of A will be <=3.so one independent solution can be assigned to X1 or X2 or X3 or X4 and other three will be calculated accordingly in case of rank=3. Sambit Kumar answered Mar 22, 2018 Sambit Kumar comment Share Follow See all 0 reply Please log in or register to add a comment.
0 votes 0 votes Option b Rank of matrix < unknow variable So it is infinite solution abhishekmehta4u answered Mar 22, 2018 abhishekmehta4u comment Share Follow See 1 comment See all 1 1 comment reply Kaluti commented Mar 30, 2018 reply Follow Share correct if i am wrong rank of matrix can be atmost 3 which would be always less than no of unknown therefore infinite solution here 0 votes 0 votes Please log in or register to add a comment.