!! +var+ +exec+ +string+
tit:solve
type:$type_both
alias:rootof
syntax:!solve ``fn'' for ``v''=``v1'' to ``v2''
mean:Find out (real simple) roots of the function/equation ``fn''\
  for the variable ``v'' between ``v1'' and``v2''.\
  <p>``fn'' may have several roots in the interval [v1,v2], but\
  roots too close to each other may be overlooked.\
  </p>
