NUM has the same effect as the keystroke combination ‚ï
(associated with the ` key). Function
NUM converts a symbolic result into
its floating-point value. Function
Q converts a floating-point value into a
Q converts a floating-point value into a fraction of , if a
can be found for the number; otherwise, it converts the number to a
fraction. Examples are of these three functions are shown next.
Out of the functions in the REWRITE menu, functions DISTRIB, EXPLN,
EXP2POW, FDISTRIB, LIN, LNCOLLECT, POWEREXPAND, and SIMPLIFY apply
to algebraic expressions. Many of these functions are presented in this
Chapter. However, for the sake of completeness we present here the help-facility
entries for these functions.