Multiplication (PR#8466)
Thomas Lumley wrote:
On Fri, 6 Jan 2006, casella at stat.ufl.edu wrote:
hi - in version 2.1 the command
-2^2
gives -4 as the answer. (-2)^2 is evaluated correctly.
So is -2^2. The precedence of ^ is higher than that of unary minus. It may be surprising, but it *is* documented and has been in S for a long time. -thomas
No, it's not surprising. At least to me... In the country where I grew up, I've been teached that -x^2 means -(x^2) not (-x)^2 ;-) H.
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