Linear Algebra Problems on Echelon Method
Not what you're looking for?
1) Use the echelon method to solve the system of two equations in two unknowns.
9x+8y=72
-6x-3y=-48
Solve the problem.
2) Linda invests $25,000 for one year. Part is invested at 5%, another part at 6%, and the rest at 8%. The total income from all 3 investments is $1600. The income from the 5% and 6% investments is the same as the income from the 8% investment. Find the amount invested at each rate.
Use the Gauss-Jordan method to solve the system of equations.
x-y+8z =107
x+2y =21
2x+y+8z =80
Purchase this Solution
Solution Summary
This posting contains the solution to the given problems.
Purchase this Solution
Free BrainMass Quizzes
Geometry - Real Life Application Problems
Understanding of how geometry applies to in real-world contexts
Graphs and Functions
This quiz helps you easily identify a function and test your understanding of ranges, domains , function inverses and transformations.
Know Your Linear Equations
Each question is a choice-summary multiple choice question that will present you with a linear equation and then make 4 statements about that equation. You must determine which of the 4 statements are true (if any) in regards to the equation.
Multiplying Complex Numbers
This is a short quiz to check your understanding of multiplication of complex numbers in rectangular form.
Probability Quiz
Some questions on probability