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Prime just returns the entered function - Printable Version

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Prime just returns the entered function - RickyFlips - 12-07-2022 08:25 PM

When I enter certain functions involving unspecified variables, my expectation is that the Prime will return a simplified version of the function or an interim result, but instead my Prime returns the function as-entered (CAS) or 0 (Home). Examples:

[attachment=11471]

What I'd expect returned is the function simplified: -2.5*e^(-50*x) + 6.25*e^(-10*x)

[attachment=11470]

What I'd expect here is an interim result, like: ln[b] - ln[a]

I've tried the "simplify" soft button, as well as the different "Simplify" settings, and I've searched both Google and here, but haven't found an answer yet. This would be immensely helpful, since simplifying by hand is commonly where I make a mistake. So, is there a way to get my Prime to do this?

Thanks!

RE: Prime just returns the entered function - phobos - 12-07-2022 10:43 PM

Run "exact()" or press the decimal to fraction button and then it'll simplify.

RE: Prime just returns the entered function - chromos - 12-08-2022 04:59 AM

[Image: cas_settings.png]
[Image: int.png]

RE: Prime just returns the entered function - RickyFlips - 12-08-2022 08:11 PM

(12-07-2022 10:43 PM)phobos Wrote:  Run "exact()" or press the decimal to fraction button and then it'll simplify.

Thank you! That works for the integral, but doesn't for simplifying the first function. Any ideas about that?

RE: Prime just returns the entered function - RickyFlips - 12-08-2022 08:12 PM

(12-08-2022 04:59 AM)chromos Wrote:  [Image: cas_settings.png]
[Image: int.png]

Thank you! That works for the integral, but doesn't for simplifying the first function. Any ideas about that?

RE: Prime just returns the entered function - phobos - 12-08-2022 09:00 PM

[Image: yF6Hc9m.png]

RE: Prime just returns the entered function - RickyFlips - 12-08-2022 09:04 PM

I didn't know about 'normal' and it's exactly what I was looking for, thank you!

RE: Prime just returns the entered function - Ioncubekh - 12-11-2022 04:58 PM

@ phobos, Thanks for comparison image