Exponentials and Logarithms

Build, combine, and simplify exponential and logarithmic functions.

63 Lessons787 Exercises

Growing

Doubling

Tripling

Powers of 10

Level Review

Bases

Initial Values

Finding the Base and Coefficient

Deducing Exponential Functions

Level Review

Decay

Fractional Bases

Building Decay Functions

Negative Exponents

Level Review

Linear Comparisons

Quadratic Comparisons

Comparing Growth

Comparing Decay

Level Review

Building Exponentials

Finding Initial Values

Fractional Bases

Building Decay Functions

Comparing Decimal Bases

Level Review

Percent Increase

Modeling Compound Interest

Modeling Depreciation

Interest Comparisons

Level Review

Stepping Along Exponentials

Skipping Along Exponentials

Exponentials Over Negatives

Reflection Over Vertical Axis

Building Exponentials

Exponentials at Half-Steps

Exponentials Between Integers

Signed Stepping

Building Exponentials

Counting Days

Log-Exponent Pairs

Inverse of Base 2

Inverse of Exponentiation

Negative Exponents

Fractional Exponents

Evaluating Logarithms

Level Review

Estimating Logs

Graphing Log Functions

Domain of the Logarithm

Fractional Bases

Graphing Fractional Bases

Level Review

The Product Rule

Proving the Product Rule

The Quotient Rule

The Power Rule

Proving the Power Rule

Transforming with Identities

Level Review

Bases 2, 4 and 8

Bases 2 and 10

Converting Bases

Converting Bases Graphically

Level Review

Taking Logs of Both Sides

The Unknown Inside a Log

Logs on Both Sides

Solutions and Domains

Using Log Identities

Graphing Solutions

Checking Solutions

Level Review


Course description

This interactive course unveils the mathematics behind some of nature's most compelling patterns—from viral spread and population growth to radioactive decay and cooling coffee. You'll begin by exploring exponential functions through interactive visualizations that bring abstract concepts to life. You'll also manipulate graphs to watch how small differences in growth rates create dramatic effects, discovering why these functions model everything from compound interest to bacterial colonies. The course then introduces logarithms, revealing how this inverse relationship unlocks solutions to previously unsolvable problems. Through guided exploration, you'll grasp why logarithms answer questions like "how long until my investment doubles?" or "when will this substance decay to safe levels?" In the second half, the focus shifts from computation to understanding the "why" behind the algebraic rules. Rather than memorizing formulas, you'll investigate the logical foundation of exponential and logarithmic properties. You'll discover why multiplying inputs leads to adding outputs, why certain transformation rules hold true, and how these patterns connect to real-world scenarios. Each property emerges naturally from hands-on investigation and reasoning. By the end, you'll recognize exponential and logarithmic relationships in everyday contexts and possess the mathematical toolkit to analyze them rigorously.


Topics covered

  • Exponential functions
  • Exponential growth
  • Exponential decay
  • Bases
  • Initial value
  • Change of base
  • Logarithms