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+--- Thread: New User - Interval not Identified (/thread-21090.html)
New User - Interval not Identified - DarthOdor - 01-01-2024 10:23 PM
I'm new to learning this PRIME. x^2 - 2x -8 <-0
-2<_ X<_4
The graph should show the inside of the parabola at/below the x-axis shaded. Instead, I only see the inside of the entire parabola as shaded. What I don't get, is that on the Toshiba, I could change f(x)= into f(x)<_ and the graph would be correct. I don't find a method that correctly graphs the interval on the prime. Any suggestion is appreciated.
RE: New User - Interval not Identified - BruceH - 01-02-2024 09:12 PM
Try the Advanced Graphing app. Chapter 8 of the HP Prime User Guide describes how to use it.
RE: New User - Interval not Identified - DarthOdor - 01-03-2024 02:50 AM
TY for your thoughts. The chapter did not illuminate an answer to graphing my example inequality correctly.
RE: New User - Interval not Identified - roadrunner - 01-03-2024 05:17 PM
Is this what you are looking for:
[attachment=13108]
-road
RE: New User - Interval not Identified - DarthOdor - 01-09-2024 08:04 AM
Thank you Roadrunner. That was helpful since I'm not used to using Boolean operations on a calculator, I just hadn't thought of using them.
Tonight, I also used two equations with the AND operator.
Great, and thanks again.