- 1 (57.64 KiB) Viewed 63 times
- 2 (67.99 KiB) Viewed 63 times
Chapter 1: Problem 13 Previous Problem Problem List Next Problem (1 point) Convert the system 5x + 9 -4x1 - 4x2 = 3х, = X2 = -7 X1 + 2 to an augmented matrix. Then reduce the system to echelon form and determine if the system consistent. If the system in consistent, then find all
solutions. Augmented matrix: Echelon form: Is the system consistent? select Solution: (x1,x2) = + S1. + S Help: To enter a matrix use [[ ].[ ]]. For example, to enter the 2 x 3 matrix 13.) you would type [[1,2,3],[6,5,4], so each inside set of [] represents a row. If there is no free variable in the solution, then type 0 in each of the answer blanks directly before each $1. For example, if the answer is (x1, x2) = (5,-2), then you would enter (5 +051, -2+0.81). If the system is inconsistent, you do not have to type anything in the 'Solution" answer blanks.
Chapter 1: Problem 17 Previous Problem Problem List Next Problem (1 point) Solve the system 5x1 = 0 = 4 -6x2 +3x3 +2x4 +x2 +3x3 +3x4 –5x2 +6x3 +5x4 3x1 –3x2 -9x3 -9x4 = - X1 4x1 = 4 -12 X1 X2 = +s +t X3 X4