# Map: Elementary Algebra (OpenStax)

*No headers*

Algebra is the study of mathematical symbols and the rules for manipulating these symbols

^{.}It is a unifying thread of almost all of mathematics. Elementary algebra is generally considered to be essential for any study of mathematics, science, or engineering, as well as such applications as medicine and economics. Elementary algebra differs from*arithmetic*in the use of abstractions, such as using letters to stand for numbers that are either unknown or allowed to take on many values.- 1: Prerequisites
- 2: Equations and Inequalities
- 3: Functions
- 4: Linear Functions
- 5: Polynomial and Rational Functions
- 6: Exponential and Logarithmic Functions
- 7: The Unit Circle: Sine and Cosine Functions
- 8: Periodic Functions
- 9: Trigonometric Identities and Equations
- 10: Further Applications of Trigonometry
- 11: Systems of Equations and Inequalities
- 12: Analytic Geometry
- 13: Sequences, Probability, and Counting Theory