Subject:
Mathematics
Material Type:
Module
Provider:
Ohio Open Ed Collaborative
Tags:
  • Mathematics
  • Tmm0022
    License:
    Creative Commons Attribution Non-Commercial
    Language:
    English
    Media Formats:
    Text/HTML

    Introduction to Exponential Functions and Logarithm Functions

    Exponential Functions

    Exponential and logarithm functions are the basis for the study of growth and decay phenomena such as

    • Growth or decay of investment, Compound Interest
    • Growth or decay of a population
    • Radioactive decay
    • Etc.

    Both functions are one-to-one and are inverses of each other. First we study exponential functions.

    Review: Laws of Exponents, domain and range of one-to-one functions and their inverses

    Learning Objectives:

    • Study and understand the basic exponential function \(f(x) = b^x, b > 0, b \neq 1\)
      • Domain, Range, Intercepts, Asymptote and Graph
    • Apply transformations to study general exponential functions \(f(x) = a \cdot b^{mx + c} + d\)
      • Domain, Range, Intercepts, Asymptote and Graph
    • Study and understand the natural exponential function \(f(x) = e^x\)
    • Solve applications using exponential functions

    Introduction to Logarithmic Functions

    A Logarithmic function with base b, where b > 0 and b is not equal to 1, is the inverse of the corresponding exponential function. These functions are useful in the study of computer algorithms and natural growth/decay phenomena of living beings, among other applications.

    Learning Objectives:

    • Study and understand the basic logarithmic function \(f(x) = b^x\)
      • Domain, Range, Intercepts, Asymptote and Graph
    • Study and understand the basic logarithmic function \(a \cdot b^{mx + b} + d\) where \(b > 0, b\neq 1\)
      • Domain, Range, Intercepts, Asymptote and Graph
    • Learn and apply basic properties of logarithms
    •  \(b^a = c\) if and only if \(log_b(c) =a\)
    • \(log_{b} b^x = x\) for all x and \(b^{log_{b} x} = x \) for x > 0