plotting and solving inequalities



Hi all

In view of didactical purposes, it would be nice if maxima were able 
to set an acceptable default X and Y range and to plot dotted line to make 
asymptotes visible.
Is it possible to achieve such result, through a proper configuration
setting? 

Also, solving inequalities in the real domain for polynomial and
trascendental (trig, exp, log) functions would be very useful.  
Any maxima-script available? 
 


thank you 

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Pol