Finding Domains of Functions on the TI-Nspire CAS

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Using your TI-Nspire CAS to find the domain of a function. It does a really good job of finding the domains of pretty much everything you run into Algebra 1, Algebra 2, Precalculus, and Calculus. Really useful feature.

In this video we find the domain of a rational function, a square root function, and then a couple of trig functions that we combine with expand to rewrite the domains in a more normal way.
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At 2:14 my answer popped up
X not equal to 540
Times n1 + 3
Times pi -270

...but our equations are the same? What do I need to do?

laceebartkus