Calculator Soup
Calculator Soup: Inverse Trigonometric Functions Calculator
This calculator will find the inverse trigonometric values for principal values in the ranges listed in the table.
Wolfram Research
Wolfram Math World: Algebraic Function
A short definition for what an algebraic function is.
Other
Radford University: One to One and Inverse Functions
This site from the Radford University provides a concise mathematical definition of one-to-one and inverse functions.
Varsity Tutors
Varsity Tutors: Hotmath: Algebra Review: Joint Variation
Find a quick, concise explanation for joint variation. An example is given and clearly explained.