Augmented Matrix In Exercises 11-18, find the solution set of the system of linear equations represented by the augmented matrix.
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Elementary Linear Algebra (MindTap Course List)
- Homogeneous System In Exercises 43-46, solve the homogeneous linear system corresponding to the given coefficient matrix. [10010100]arrow_forwardMatrix sizeIn Exercises 1-6, determine the size of the matrix. [124346012]arrow_forwardUsing a Graphing Utility: In Exercises 79-84, use the matrix capabilities of a graphing utility to write the augmented matrix corresponding to the system of linear equations in reduced row-echelon form. Then solve the system. 3x+3y+12z=6x+y+4z=22x+5y+20z=10x+2y+8z=4arrow_forward
- Comparing Linear Systems and Matrix Operations: In Exercises 39 and 40, (a) perform the row operations to solve the augmented matrix, (b) write and solve the system of linear equations (in variables x, y, and z, if applicable) represented by the augmented matrix, and (c) compare the two solution methods. Which do you prefer? 7131435143612 i Add R2 to R1. ii Multiply R1 by 14. iii Add R3 to R2. iv Add 3 times R1 to R3. v Add 2 times R2 to R1.arrow_forwardFill in the blanks. If A is an invertible matrix, then the system of linear equations represented by AX=B has a unique solution given by X=.arrow_forwardMatrix Representation In Exercises 49 and 50, assume that the matrix is the augmented matrix of a system of linear equations, and a determine the number of equations and the number of variables, and b find the values of k such that the system is consistent. Then assume that the matrix is the coefficient matrix of a homogeneous system of linear equations, and repeat parts a and b. A=[21342k426]arrow_forward
- Solve the homogeneous linear system corresponding to the coefficient matrix. [121200242412]arrow_forwardWriting Let x be a solution to mn homogeneous linear system of equations Ax=0. Explain why x is orthogonal to the row vectors of A.arrow_forwardOne hundred liters of a 50% solution is obtained by mixing a 60% solution with a 20% solution. Use a system of linear equations to determine how many liters of each solution are required to obtain the desired mixture. Solve the system using matrices.arrow_forward
- True or false? det(A) is defined only for a square matrix A.arrow_forwardCalculus In Exercises 35 and 36, find the values of x,y, and that satisfy the system of equations. Such systems arise in certain problems of calculus, and is called the Lagrange multiplier. 2x+=02y+=0x+y4=0arrow_forwardSolving a Linear System Using LU-Factorization In Exercises 47 and 48, use an LU-factorization of the coefficient matrix to solve the linear system. 2x+y=1 y-z=2 -2x+y+z=-2arrow_forward
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