System of Linear Equations In Exercises 25-38, solve the system using either Gaussian elimination with back-substitution or Gauss-Jordan elimination.
Want to see the full answer?
Check out a sample textbook solutionChapter 1 Solutions
Bundle: Elementary Linear Algebra, Loose-leaf Version, 8th + MindTap Math, 1 term (6 months) Printed Access Card
- Coefficient Design In Exercises 79-84, determine the values of k such that the system of linear equations has the indicated number of solutions. Exactly one solution kx+2ky+3kz=4kx+y+z=02xy+z=1arrow_forwardWriting Consider the system of linear equations in x and y. a1x+b1y=c1a2x+b2y=c2a3x+b3y=c3 Describe the graphs of these three equations in the xy-plane when the system has a exactly one solution, b infinitely many solutions, and c no solution.arrow_forwardDetermine the values of k such that the system of linear equations does not have a unique solution. x+y+kz=3x+ky+z=2kx+y+z=1arrow_forward
- Back-Substitution. In Exercises 25-30, use back-substitution to solve the system. xy=53y+z=114z=8arrow_forwardSystem of Linear Equations In Exercises 25-38, solve the system using either Gaussian elimination with back-substitution or Gauss-Jordan elimination. x+2y=0x+y=63x2y=8arrow_forwardUse a software program or a graphing utility to solve the system of linear equations. 0.2x2.3y+1.4z0.55w=110.63.4x+1.3y1.7z+0.45w=65.40.5x4.9y+1.1z1.6w=166.20.6x+2.8y3.4z+0.3w=189.6arrow_forward
- Back-Substitution. In Exercises 25-30, use back-substitution to solve the system. x+yz=02y+z=312z=0arrow_forwardDiscovery In Exercises 91 and 92, sketch the lines represented by the system of equations. Then use Gaussian elimination to solve the system. At each step of the elimination process, sketch the corresponding lines. What do you observe about the lines? 2x3y=74x+6y=14arrow_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
- Checking Solutions in Exercises 7-10, determine whether each ordered triple is a solution of the system of equations. 6xy+z=14x3z=192y+5z=25 (a) 0,3,1 (b) 3,0,5 (c) 0,1,4 (d) 1,0,5arrow_forwardTemperature In Exercises 29 and 30, the figure shows the boundary temperatures in degree Celsius of an insulted thin metal plate. The steady-state temperature at an interior junction is approximately equal to the mean of the temperatures at the four surrounding junctions. Use a system of linear equations to approximate the interior temperatures T1,T2,T3, and T4.arrow_forward
- Elementary Linear Algebra (MindTap Course List)AlgebraISBN:9781305658004Author:Ron LarsonPublisher:Cengage LearningAlgebra and Trigonometry (MindTap Course List)AlgebraISBN:9781305071742Author:James Stewart, Lothar Redlin, Saleem WatsonPublisher:Cengage LearningCollege AlgebraAlgebraISBN:9781305115545Author:James Stewart, Lothar Redlin, Saleem WatsonPublisher:Cengage Learning
- Algebra: Structure And Method, Book 1AlgebraISBN:9780395977224Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. ColePublisher:McDougal LittellGlencoe Algebra 1, Student Edition, 9780079039897...AlgebraISBN:9780079039897Author:CarterPublisher:McGraw Hill