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Topic: [ap-calculus] Off topic, Algebra 2 inverse function notation
Replies: 4   Last Post: Sep 1, 2012 10:55 PM

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Jean St.Clair

Posts: 36
Registered: 3/14/08
[ap-calculus] Off topic, Algebra 2 inverse function notation
Posted: Sep 1, 2012 4:42 PM
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Our school is using a new on line Algebra 2 book this fall. The
algebra teachers noticed that function notation was used for inverses
even if the inverse was not a function. For instance, if the function
was f(x) = x^2, the inverse was noted as f^-1(x) = +/_ square root
(x). We have always taught that if the inverse is not a function,
then you could not use inverse function notation on the inverse
equations. Is this acceptable notation? Thanks for any help.


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