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Derivative format question
03-19-2020, 06:07 PM (This post was last modified: 03-19-2020 08:08 PM by DrD.)
Post: #1
Derivative format question
[CAS], ver 2020 01 16

   

The example, (image), is represented using two different formats for the derivative. When the integral is evaluated, different results are obtained, but only the derivative's format has changed. Why is the result different?

-Dale-
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03-19-2020, 08:44 PM
Post: #2
RE: Derivative format question
(03-19-2020 06:07 PM)DrD Wrote:  [CAS], ver 2020 01 16



The example, (image), is represented using two different formats for the derivative. When the integral is evaluated, different results are obtained, but only the derivative's format has changed. Why is the result different?

-Dale-

zero is wrong. It's a very simple integration.
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03-19-2020, 09:23 PM
Post: #3
RE: Derivative format question
(03-19-2020 08:44 PM)CyberAngel Wrote:  
(03-19-2020 06:07 PM)DrD Wrote:  Why is the result different?

-Dale-
zero is wrong. It's a very simple integration.

Why is the integration result different with a change in format?

With the derivative represented in "tick" format, vs, "diff(expr,var)," the result differs.
Perhaps an my own entry error? Perhaps my misunderstanding? Perhaps not completely tested? Perhaps a bug?.... etc.
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03-19-2020, 11:05 PM
Post: #4
RE: Derivative format question
I guess it's a bug with the definite integral. The indefinite one works with the quote symbol, even when evaluated at the limits.


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03-20-2020, 02:14 AM
Post: #5
RE: Derivative format question
I suspect the ' is being handled (or not handled) in this case with the definite evaluator. Maybe Bernard can shed some light?

TW

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