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A be a square matrix. Then, 1/2 (A-A') is","choices":[{"text":"Skew-symmetric","value":"A"},{"text":"Symmetric","value":"B"},{"text":"Null","value":"C"},{"text":"None of the above","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":123420,"question":"If A is a skew-symmetric matrix of order n and P, any square matrix of order n, prove that P' AP is","choices":[{"text":"Skew-symmetric","value":"A"},{"text":"Symmetric","value":"B"},{"text":"Null","value":"C"},{"text":"Diagonal","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":123418,"question":"(ABC)' =","choices":[{"text":"CBA'","value":"A"},{"text":"CBA","value":"B"},{"text":"C' B' A'","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":123416,"question":"","questionImage":"123416_636348659285341269-RQ.jpg","choices":[{"text":"1","value":"A"},{"text":"0","value":"B"},{"text":"-1","value":"C"},{"text":"2","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":123413,"question":"","questionImage":"123413_636348657527432455-RQ.jpg","choices":[{"text":"1","value":"A"},{"text":"0","value":"B"},{"text":"3","value":"C"},{"text":"-1","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":123412,"question":"","questionImage":"123412_636348656434173958-RQ.jpg","choices":[{"text":"-3","value":"A"},{"text":"-7","value":"B"},{"text":"1","value":"C"},{"text":"0","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":123411,"question":"","questionImage":"123411_636348654838967227-RQ.jpg","choices":[{"text":"A<sup>2</sup>- 5A + 7I = 1","value":"A"},{"text":"2A<sup>2</sup>- 3A + 7I = 0","value":"B"},{"text":"A<sup>2</sup>- 5A + I = 0","value":"C"},{"text":"A<sup>2</sup>- 5A + 7I = 0","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":123406,"question":"","questionImage":"123406_636348645900074483-RQ.jpg","choices":[{"text":"","img":"123406_636348645900074483-RA1.jpg","value":"A"},{"text":"","img":"123406_636348645900074483-RA2.jpg","value":"B"},{"text":"","img":"123406_636348645900074483-RA3.jpg","value":"C"},{"text":"","img":"123406_636348645900074483-RA4.jpg","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":123401,"question":"","questionImage":"123401_636348641446592608-RQ.jpg","choices":[{"text":"","img":"123401_636348641446592608-RA1.jpg","value":"A"},{"text":"","img":"123401_636348641446592608-RA2.jpg","value":"B"},{"text":"","img":"123401_636348641446592608-RA3.jpg","value":"C"},{"text":"","img":"123401_636348641446592608-RA4.jpg","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":123394,"question":"","questionImage":"123394_636348638294350472-RQ.jpg","choices":[{"text":"a = 2, b = 3","value":"A"},{"text":"a = 3, b = 2","value":"B"},{"text":"a = 2, b = 1, 2","value":"C"},{"text":"a = 3, b = 3","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":120422,"question":"Which of the following is an identity matrix?","choices":[{"text":"","img":"120422_636339073188496464-RA1.jpg","value":"A"},{"text":"","img":"120422_636339073188496464-RA2.jpg","value":"B"},{"text":"","img":"120422_636339073188496464-RA3.jpg","value":"C"},{"text":"none of these","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":120421,"question":"","questionImage":"120421_636339072733741139-RQ.jpg","choices":[{"text":"0","value":"A"},{"text":"1","value":"B"},{"text":"-A","value":"C"},{"text":"-1","value":"D"},{"value":"E"}],"correctAnswer":1}]