MaplePrimes - answers and comments on Question, Input/Output Inconsistencies

nice :-) lesson learnd?

Axel Vogt — Fri, 01 Jul 2011 00:37:26 Z

use the real (usually named "classical") interface and type in
the correct expression, using the multiplication sign

x^2 * sin(x)

Does it work then?

Ok ??

North — Fri, 01 Jul 2011 00:37:40 Z

It seems to my admitedly limited knowledge of Maple that all of what you typed is correct and the correct answers were displayed. So I guess the rest is up the the experts, but still what is it you want as an output ?? everything you copied was somehow not quite right because no matter how I input example 1 I get the correct answer.

Inconsistencies

Robert Israel — Fri, 01 Jul 2011 01:08:38 Z

The third version, copied from the help page, used an "inert" version of differentiation. Note that the d's are "greyed out". The same effect can be obtained by typing Diff instead of diff. To evaluate an expression containing inert operators, you can use the value command.

In the fourth version you apparently typed in d/dx. Note that the d's are shown in italics. This is not interpreted as differentiation, rather as a ratio of two variables named "d" and "dx".

The "copied from help page" version is the

andrewfortune — Fri, 01 Jul 2011 01:48:12 Z

The "copied from help page" version is the one that I want. This is so I can pick up the expression by label and input it to the ShowSolution command.

If I just type in ShowSolution, and then type in the expression between the brackets, I get the error message "Error, (in Student:-Calculus1:-ShowSolution) input expression does not have any incomplete calculus operations".

Inert version

Robert Israel — Fri, 01 Jul 2011 03:46:48 Z

To get the inert version, you can type in

Diff(x^2*sin(x),x)