Problem with polar form of complex numbers

[salvomic]

(12-14-2017 09:51 PM)Helge Gabert Wrote:  Correct for Home,

but start in CAS

20 ∢ -45 ( 45 with +- button) OK

now grab 20 ∢ -45 from the CAS history and press Home and Enter, and you get the error. Perhaps this is the problem the OP ran into? Notice how in CAS the +- (unary) minus gets converted into the regular minus?

yes, right, the ± is converted in minus passing to Home (it should be corrected, it's a little bug, yes). As a workaround it is good to change the minus in ±, for now...