Matrix Applications and Pivoting

Find the area of triangles and polygons from their co-ordinates. Use the pivot technique to find a inverse matrix or gaussian elimination or solve a system of equations

Linear Systems(Chapter 7 Test Answers)

Chapter 7 we learn the basics of multiple linear systems of equations, including the powerful simplex method of Dantzig.

Homework solutions on Inverse Trig & Trig Word Problems

Answers to some Inverse Trig and Trig Word problems in Chapter 4 Review homework.

More Trig graphing and Trig Applications

Graphing Tan, Cot, Sec, Csc functions and word problems involving the trig functions.

Families of Functions and Transformations

How to graph peice-wise functions, parabolas, family of functions, transformations and mathematical modeling. This is an explanation of a Test given after Chapter 1 of a Precalculus book that covers these topics that were first introduced in earlier High school Algebra Courses.

Answers to a first Trig Test

Answers to a first Test in Trig: Graphing Sine Cosine and other trig facts and word problems.

Click on the Green title to see the video.

Review of Algebra 1 Graphing and Modeling

Line and circle equations and direct and inverse relationship modeling