Study Guide

# Exponential and Logarithmic Functions Introduction

## Exponential and Logarithmic Functions Introduction

We are about to embark on an epic journey that will take us through exponential and logarithmic functions. Try to imagine winning the lottery and putting your money into accounts that get a high percentage rate. If you don't spend it, your account will get exponentially larger. Now that's definitely a possibility for you, but not probable.

Real Life Alert: Unless you are very lucky to deal with large sums of lottery or inheritance money, the exponential growth that you might encounter is to go get a car or house loan and calculate the payments and interest. Let's try not to get too anxious, as the math in this unit has a lot of real-life connections, some great and some not so great.

We will also learn on this journey how to tell if functions are exponential growth or decay and how to graph them. We will explore inverses of exponential functions which are logarithmic functions. This will help us solve exponential and logarithmic equations. When we are done, we will be able to tackle the world...if it hasn't tackled us first with some rampant zombie virus. ## Exponential and Logarithmic Functions Resources

### Games and Tools

Graphing Program That Teaches a Thing or Two
If you want to know anything about math, statistics, use a grapher, or just simply amuse yourself by strange information about everything, check out Wolfram Alpha.

Quia Exponentials and Logarithmics "From Rags to Riches" game.

Coolio Graphing Calculator
You can graph many curves at the same time, zoom functions lets you discover functions as you type them. Hands down, this is the best graphing calculator we have found.

Another great graphing calculator tool...it's kind of like a TI-83, but on a screen.

Jeopardy for Math Lovers
Here is a Jeopardy review game of exponential and logarithmic equations.

Cartoons and Exponentials
Here's a practice quiz for exponential equations. The cartoons are just bonus.

Cartoons and Logs
Here's a practice quiz for logarithmic equations. Again, the cartoons help.

That's Hot
Graphing exponential and logarithmic functions, including a visualizer.

### Websites

Quick Log Review
Extra learning possibilities of exponential and logarithmic equations at this site. And they use color codes...even better.

Why Does This Stuff Exist? 