suivant: Floating point representation.
monter: Symbolic algebra and Mathematics
précédent: Animation of a sequence
Table des matières
Real numbers may have an exact representation
(e.g. rationals, symbolic expressions
involving square roots or constants like , ...)
or approximate representation, which means that the real
is represented by a rational (with a denominator that is a power
of the basis of the representation) close to the real.
Inside Xcas, the standard scientific notation is used
for approximate representation, that is a mantissa (with a point
as decimal separator) optionnally followed by the letter e
and an integer exponent.
Note that the real number 10-4 is an exact number but
1e - 4 is an approximate representation of this number.
giac documentation written by Renée De Graeve and Bernard Parisse