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Page Revision: 2009/10/01 02:07
solve function is used to numerically find the real roots of an
expression in a given
variable. It might have two or four arguments
solve('expression','variable')
solve('expression','variable','lower','upper')
When given two arguments, the roots will be searched in the range given by
Tools=>Options=>Roots(range). this is very important, if the root is outside that range it will NOT be found.
The precision of root finding depends on the option from the menu
Tools=>Options=>Decimal places 
Increase the number of decimal places for greater precision.