Sal explains what inverse functions are. Then he explain how to algebraically find the inverse of a function and looks at the graphical relationship between inverse functions.
Verify that two functions are inverses is a free educational video by Khan Academy.It helps students in grades 9,10,11,12 practice the following standards HSF.BF.B.4.a.
1. HSF.BF.B.4.a : Solve an equation of the form f(x) = c for a simple function f that has an inverse and write an expression for the inverse.
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