Concept explainers
Finding a Basis and Dimension In Exercises
Want to see the full answer?
Check out a sample textbook solutionChapter 4 Solutions
Elementary Linear Algebra (MindTap Course List)
- Find an orthonormal basis for the solution space of the homogeneous system of linear equations. x+yz+w=02xy+z+2w=0arrow_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_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_forward
- Find all values of for which the homogeneous system of linear equations has nontrivial solutions. (+2)x12x2+3x3=02x1+(1)x2+6x3=0x1+2x2+x3=0arrow_forwardProof Let A be an mn matrix. a Prove that the system of linear equations Ax=b is consistent for all column vectors b if and only if the rank of A is m. b Prove that the homogeneous system of linear equations Ax=0 has only the trivial solution if and only if the columns of A are linearly independent.arrow_forwardSolve the homogeneous linear system corresponding to the coefficient matrix. [121200242412]arrow_forward
- One 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_forwardUse Matrix Inversion to solve the collection of systems of linear equations. You do not need to show how you calculate any inverses, but you do need to state what the inverses are and how you are using them. a.) −x + 2y + 3z = 1 , x + y + z = 2 , 2x + y + 3z = 3 b.) −x + 2y + 3z = 0 , x + y + z = 0 , 2x + y + 3z = 7 c.) −x + 2y + 3z = 2 , x + y + z = 1 , 2x + y + 3z = 1arrow_forwardDetermine if the system has a solution. If so, write the solution in parametric vector form. How does this compare to the solution(s) to the homogeneous linear system with the same coefficients on each variable? -x1 + X2 2x1 + 3x2 x1 + X2 - 5x3 5x3 x3 = = -1 12 5arrow_forward
- Use Cramer's Rule to solve the system of linear equations, if possible. (If not possible by Cramer's Rule, enter IMPOSSIBLE.) 2x1 + x2 + 8x3 = 14 X1 + 7x2 + 6x3 = 22 3x1 + x2 + 17x3 = 25 Use a graphing utility or a computer software program with matrix capabilities and Cramer's Rule to solve for x1, if possible. (If not possible, enter IMPOSSIBLE.) - x2 - -40 - 63arrow_forwardDescribe and compare the solution sets of x₁ + 2x2 - 5x3 = 0 and X₁ + 2x2 - 5x3 = -3. X₁ Describe the solution set, x= x₂, of x₁ + 2x₂ - 5x3 = 0 in parametric vector form. Select the correct choice below X3 and fill in the answer boxes within your choice. (Type an integer or fraction for each matrix element.) O A. X= O B. X=X3 OC. X=X₂ O D. x= +X3 + X₂arrow_forward(a) Write b as a linear combination of the column vectors a1 and a2. (b) Use the result from part (a) to determine a solution of the linear system Ax = b. Does the system have any other solutions? Explain. (c) Write c as a linear combination of the column vectors a1 and a2.arrow_forward
- Elementary Linear Algebra (MindTap Course List)AlgebraISBN:9781305658004Author:Ron LarsonPublisher:Cengage LearningAlgebra: Structure And Method, Book 1AlgebraISBN:9780395977224Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. ColePublisher:McDougal Littell
- Elementary Geometry for College StudentsGeometryISBN:9781285195698Author:Daniel C. Alexander, Geralyn M. KoeberleinPublisher:Cengage LearningAlgebra & Trigonometry with Analytic GeometryAlgebraISBN:9781133382119Author:SwokowskiPublisher:CengageAlgebra and Trigonometry (MindTap Course List)AlgebraISBN:9781305071742Author:James Stewart, Lothar Redlin, Saleem WatsonPublisher:Cengage Learning