Lesson: Inverse of a Function Mathematics • Second Year of Secondary School

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In this lesson, we will learn how to find the inverse of a function by changing the subject of the formula.

Students will be able to

recognize the notation for the inverse function: generally the inverse of a function, , is ,
recognize that if an invertible function, , maps an input, , to an output, , then maps the variable, , to ,
recognize the conditions for which a function is invertible and be able to state the domain and range of an inverse function,
evaluate the inverse function from a function mapping diagram, a table of values, or a graph,
find the inverse of an invertible function, , by changing the subject from to .