The links below will take you to videos and exercises relating to the content in MATH-141.
SYSTEMS OF LINEAR EQUATIONS AND MATRICES
Solving Systems of Linear Equations
Solving by Graphing (marcwhitaker)
MathTV > Algebra > Systems of Equations > Solving by Graphing
(Please read about MathTV videos to understand how to get to this one.)
Solving by Substitution (PatrickJMT)
MathTV > Algebra > Systems of Equations > Solving by Substitution
Solving by Elimination (Addition) (PatrickJMT)
MathTV > Algebra > Systems of Equations > Solving by Addition (Elimination)
MathTV > Algebra > Systems of Equations > Applications (Word Problems)
Supply & Demand, Solving for Equilibrium (economicsisfun)
Systems of Equations, Augmented Matrices and Gauss-Jordan Method
Row Reducing Matrices, part 1 (PatrickJMT)
Row Reducing Matrices, part 2 (PatrickJMT)
Using the Gauss-Jordan Method to Solve a System of Equations, part 1 (intuitivemath)
Using the Gauss-Jordan Method to Solve a System of Equations, part 2 (intuitivemath)
Using the TI-83/84 to Solve a 3x3 System of Equations (scottrelliott)
Some advice: it's very easy to solve matrices with RREF, but you should also make sure
that you can do them by hand. It would also be useful to practice them step-by-step on
the calculator, because you're going to need both these methods later on in the course.
The following link will help:
Using the TI-84 to Perform the Pivot Operation (scottrelliott)
Matrix Operations
Matrix Operations - add, subtract, multiply by a constant (PatrickJMT)
Multiplying Matrices, example 1 (PatrickJMT)
Multiplying Matrices, example 2 (PatrickJMT)
Multiplying Matrices, example 3 (PatrickJMT)
Application of Matrix Multiplication (ncoppola4)
Calculator Help for Matrix Operations
Matrix Operations on the TI83/84 (aborne)
Using the TI-83/84 for Matrices (anorman728)
FINDING AN INVERSE MATRIX
Inverting Matrices (KhanAcademy)
LINEAR INEQUALITIES AND LINEAR PROGRAMMING
Series of Videos by dwatsonmc
Graphing a System of Linear Inequalities
Setting Up a Linear Programming Problem, maximizing
(Ooops, at the 2:33 mark, he should have said and written 20y, not 20x)
Setting Up a Linear Programming Problem, minimizing
Finding Max/Min with Linear Programming, part 1
Finding Max/Min with Linear Programming, part 2
Solving a Linear Programming Problem, part 1
Solving a Linear Programming Problem, part 2
Alternate Series of Videos by PatrickJMT
Graphing a System of Linear Inequalities, example 1
Graphing a System of Linear Inequalities, example 2
Linear Programming Word Problem, example 1
Linear Programming Word Problem, example 2
Calculator Help for Linear Programming
Graphing Inequalities on the Calculator (gboyinc)
THE SIMPLEX METHOD
Two-Part Explanation by scottrelliott
Solving a Maximization Problem, Part 1
Solving a Maximization Problem, Part 2
Five-Part Explanation by PatrickJMT
The Simplex Method - Finding a Maximum, Part 1 intro
The Simplex Method - Finding a Maximum, Part 2 setting up the tableau
The Simplex Method - Finding a Maximum, Part 3 row reduction
The Simplex Method - Finding a Maximum, Part 4 more row reduction
The Simplex Method - Finding a Maximum, Part 5 interpreting the results
Calculator Help for the Simplex Method
Using the TI-84 to Perform the Pivot Operation (scottrelliott)
FUNCTIONS & GRAPHS
Scatter Plots and Linear Regressions
Graphing Scatter Plots on the Calculator (laneCrease)
Linear Regression by Calculator (EllenSmyth)
Graphs & Transformations
Library of Functions 1 (mathlablady1)
Library of Functions 2 (mathlablady1)
Vertical Shifts (drphilclark)
Horizontal Shifts (drphilclark)
Horizontal & Vertical Shifts (waszel)
Vertical Scaling (stretching and shrinking) (drphilclark)
Vertical Shrinking and Stretching (waszel)
Quadratic Functions
Finding a Revenue Function (drphilclark)
Building a Revenue Function, part 1 (mathlablady1)
Building a Revenue Function, part 2 (mathlablady1)
Maximum Revenue (mathlablady1)
Logarithmic Functions
Compound Interest Problem 1 (videosbyjulieharland)
Compound Interest Problem 2 (videosbyjulieharland)
MATHEMATICS OF FINANCE
Simple & Compound Interest
Simple Interest (bullcleo1)
Simple Interest Example (bullcleo1)
Understanding Simple & Compound Interest (PatrickJMT)
Deriving the Annual Compounded Interest Formula (PatrickJMT)
Compound Interest - More Than Once Per Year (PatrickJMT)
Compound Interest - More Than Once Per Year, Part 2 (PatrickJMT)
Which Bank is the Best One (PatrickJMT)
Finding the Interest Rate (PatrickJMT)
Finding the Interest Rate, an easier example (PatrickJMT)
Compound Interest (bullcleo1)
APY - Annual Percentage Yield (dwatsonmc)
Interest Compounded Continuously
Continuously Compounded Interest (mathlablady1)
Compound Continuously (dwatsonmc)
Future Value of an Annuity
Annuities: Finding Future Value (PatrickJMT)
Annuities: How Much to Deposit (PatrickJMT)
Determining the Monthly Payment (bullcleo1)
Determining the Future Value on the TI-83/84 (bullcleo1)
Determining Required Payments on the TI-83/84 (bullcleo1)
Some advice: before you depend on the TVM solver to take care of all your problems,
make sure that you are allowed touse it on a test and make sure that you really
understand it.
Present Value of an Annuity
Present Value of an Annuity (dwatsonmc)
Loan Information Using the TI-83/84 (bullcleo1)
Determining the Loan Payment on the TI-83/84 (bullcleo1)