Erable
(the sign * after the flag number
means that the flag is cleared if VER
is called,
# means that the flag is set if VER
is called):
Erable
performs integer arithmetic
otherwise Erable
performs polynomial arithmetic
GCD
returns always 1
(hence algebraics are not simplified
and multiple roots of polynomials are not detected)
re
, im
and
conj
and the way
of rooting polynomials)
INT
, if set then INT
integrates a fraction
of
INT
, if set then integration else partial
fraction decomposition.
DIAG
, if set then force multiplication of lists
to be matrix times polynomials in Horner scheme
EXPA
and
TSIMP
RISCH
does not try linearity
TRIG
tries to return only sines, otherwise
it returns cosines
LVAR
)
-27
) affects the way symbolic complex numbers
are displayed. System flag 2 affects the way symbolic constants
are evaluated (for example
is returned as a
symbolic constant or as a numeric approximation). This flag is set
or cleared by Erable
according to the current mode of
Erable
(numeric or symbolic).