calc: Giac Language Mode
7.8.7 Giac Language Mode
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The ‘d A’ (‘calc-giac-language’) command selects the conventions of
Giac, another free computer algebra system. The function names in Giac
are similar to Maxima. Complex numbers are written ‘3 + 4 i’. The
standard special constants in Giac are the same as in Calc, except that
‘infinity’ represents both Calc’s ‘inf’ and ‘uinf’.
Underscores are allowed in function and variable names in Giac mode.
Brackets are used for subscripts. In Giac, indexing of lists begins at
0, instead of 1 as in Calc. So if ‘A’ represents the list ‘[a,2,c,4]’,
then ‘A[2]’ would equal ‘c’. In general, ‘A[n]’ in Giac mode
corresponds to ‘A_(n+1)’ in Normal mode.
The Giac interval notation ‘2 .. 3’ has no surrounding brackets; Calc
reads ‘2 .. 3’ as the closed interval ‘[2 .. 3]’ and writes any kind of
interval as ‘2 .. 3’. This means you cannot see the difference between
an open and a closed interval while in Giac mode.
Info Catalog
calc: Maxima Language Mode
calc: Language Modes
calc: Mathematica Language Mode