The following classes are part of the calculator project:

• BinaryOp
• CalculatorFunctions
• Cos
• Exp
• Log
• Number
• Polynomial
• Sin
• TrigFunctions
• Variable

There are 8 main kinds of functions and mathematical objects:
Variable, Number, BinaryOp, Polynomial, Log, Exp, Sin, and Cos
The value and derivative can be found for each of these 8 types of functions and mathematical objects. Attempting to find the value of a function with a variable in it will throw an UnsupportedOperationException.

These are descriptions for each of the 8 main functions and mathematical objects:

• Variable: represents the variable x
• Number: represents a number as a double
• BinaryOp: represents a binary operator (+, -, *, /) and two function operands
• Polynomial: represents a function raised to a power
• Log: represents the natural logarithm function
• Exp: represents the natural exponential function
• Sin: represents the sine function
• Cos: represents the cosine function

The two files that relate to the JUnit testing of this project are:

• Calculator Classes Testing Document
• Calculator Testing Class

The testing class contains 230+ JUnit tests for the calculator's functions, ensuring that it has incredible functionality. The testing document gives short descriptions of every JUnit test that I ran.