MATH 204 Exam 2, Spring 2003

‘ LAmbrican University of Beirut Second Semester 2003 Math 204 Quiz eo Namie:---—--==+-------=+-----+ JD Number: --------------------- . Section: -------------------. (30% )} Part One: 10 Multiple choice questions, with 3% for each correct . Circle the correct answer: 1 “5 -2 1 3 Consider A= (; 5 ) ,B=15 0 , C=} 5 |.Answer questions 1-6. 7 -2 -2 1. The determinant of the matrix A is equal to: a)3 b)-4 c)-3 d) 5 2} ea) Od) 3. Let 1 be the identity matrix of order 2 then A-2]= 2 ar a) 4. The cofactor of the élement in the first row ,second column of Avis: --~ a) -2 b) -1 c)2 d) 1 5. The dimension of the matrix B’.C is : a) 3x2 b) 2x3 c) 2x1 d) 1x2 6. The first row of the matrix B.A is : a) (4 5) 'b) (0 5)