#### coyazayo

##### Member

- Joined
- Oct 20, 2014

- Messages
- 58

- Gender
- Male

- HSC
- 2018

Hey guys I have year 10 yearlies soon and one of the topic is inverse function. However I am confused in regards to restricting a domain such that inverse f(x) exists. For example when y=x^3-3x is restricted and must include zero, the answer states the domain as -1<x<1 (which excludes the stationary points). However, an inverse sine function has a domain of -1≤x≤1, where the stationary point IS included. So how do I determine the domain?? Do I include or exclude the stationary points?

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