Average value of triangle wave error.

[ttokoro]

Red shows symbolic error.

Mathcad 15

Prime 7

[Werner_E · Accepted solution]

Very strange effects indeed.

The wrong result from muPad (in real Mathcad and in Prime up to V.6) worries me more than the strange "unknown" error from the new symbolic engine.
I vaguely remember that a similar error of the old symbolic was already discussed in the forum quite a while ago.

Here are the results in Prime 6:

Changing the lower limit of the integral cures the problem for both symbolic engines

[LucMeekes]

Mathcad with Maple:

Luc

[Werner_E]

I had no doubt that Maple in MC11 would return the correct result without problems.