[Maxima] question

[Mikhail Maroukhine]

Hello,

Harald Geyer wrote:
> Hi Johan,
>> When I try to integrate som functions (part of a double integral) 
>> and I fill in some bounds, maxima always keeps asking: 
>> is ...... positive, negative or zero.
>>
>> Can this question turned off?
>>     
>
> In general it can't be turned off. AFAIK there is some work in progress
> to return conditional expressions in such cases, but I don't think it
> is mature yet.
>
> OTOH you can avoid specific questions by telling maxima the answer
> beforehand: Use assume(a>0) to tell maxima that a is positive. There
> are more examples how to use assume() in the manual
May we say maxima to check all possible variants (positive, negative and 
zero)?

Mikhail