Unformatted text preview: A x = b : Do not continue to solve the system. & 4 x & 2 y = 1 x + 3 y & z = 5 6. (20) Use only steps allowed by Gaussian Elimination to reduce the following matrix to Row Reduced Echelon Form (RREF). 2 4 1 2 & 3 2 4 & 2 2 3 6 & 4 3 3 5 7. (20) Solve for x in the following equation. ± 1 1 1 2 ² x = ± 1 & 1 2 1 ² 8. (20) List &ve signi&cant statements which are logically equivalent to the statement " A has an inverse" 9. (20) Find the inverse for the matrix which represents 2 R 1 + R 2 ; & 1 R 1 + R 3 on a matrix with three rows. 10. (20) Use Cramer²s Rule to &nd values for a and g: Ten points of this will rely on you evaluating the determinant of 2 4 1 1 1 & 1 & 1 2 1 3 5 : 2 4 1 1 1 & 1 & 1 2 1 3 5 2 4 a b c d e f g h i j k l 3 5 = 2 4 3 & 3 1 5 1 1 2 1 1 3 5 1...
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This note was uploaded on 04/11/2011 for the course MATH 244 taught by Professor Staff during the Winter '04 term at Cal Poly.
 Winter '04
 staff
 Math

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