## Precalculus

### Other Topics: Matrices, Sequences, and Series

Other precalculus topics include an introduction to sequences and series (sequences of partial sums), with special attention to the geometric series. Matrices and their application to solving systems of equations and representing geometric transformations are also included.

### Precalculus: Other Topics: Matrices, Sequences, and Series Activities

Title Type

#### From Rumor to Chaos

This lesson involves modeling the spread of a rumor and similar problems.

• 2133

#### Building Sequences and Series with a Spreadsheet

This lesson has students create sequences and series in a spreadsheet.

• 2351

#### Sum of Infinite Geometric Series

This lesson involves clicking on a slider to see that the area of a square that has been systematically divided into an infinite number of pieces approaches 1.

• 3065

#### 3x3 Linear Systems of Equations

This lesson involves connecting graphical representations of systems of linear equations in three variables to the number of solutions of those systems.

• 2549

#### Linear Transformations

This lesson involves linear transformations from R2 to R2 represented by matrices. Note: R2 = R x R represents the set of all pairs of real numbers.

• 2091

#### Parabolas and Matrices

This lesson involves using matrices to solve a system of three simultaneous linear equations.

• 2107

#### Cryptology and Matrices

This lesson involves using matrices to encode and decode a message.

• 2266

#### Roots and Cobwebs

This lesson involves finding roots to equations using a method similar to those used by many calculators.

• 2065