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New User - Interval not Identified
01-01-2024, 10:23 PM
Post: #1
New User - Interval not Identified
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.
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01-02-2024, 09:12 PM
Post: #2
RE: New User - Interval not Identified
Try the Advanced Graphing app. Chapter 8 of the HP Prime User Guide describes how to use it.
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01-03-2024, 02:50 AM
Post: #3
RE: New User - Interval not Identified
TY for your thoughts. The chapter did not illuminate an answer to graphing my example inequality correctly.
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01-03-2024, 05:17 PM
Post: #4
RE: New User - Interval not Identified
Is this what you are looking for:

   

-road
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01-09-2024, 08:04 AM
Post: #5
RE: New User - Interval not Identified
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.
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