`^`

) on
unit objects. Different units may be used, but they must be
compatible for + and -. The result is an unit object
- for the
multiplication and the division of two unit objects
`_u1`and`_u2`the unit of the result is written`_(u1*u2)`or`_(u1/u2)`. - for an addition or a substraction of compatible unit objects, the result is expressed with the same unit as the first term of the operation.

`^`

2

giac documentation written by Renée De Graeve and Bernard Parisse