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80
2007 Aug 30
7
Behaviour of very large numbers
Dear all,
I am struggling to understand this.
What happens when you raise a negative value to a power and the result
is a very large number?
B
[1] 47.73092
> -51^B
[1] -3.190824e+81
# seems fine
# now this:
> x <- seq(-51,-49,length=100)
> x^B
[1] NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN <snip>
> is.numeric(x^B)
[1] TRUE
> is.real(x^B)
[1]