Are you getting caught on order of operations? Note that unary minus
has lower precedence than exponentiation (as it does in math) so
-2.5^(-2.4)
is
x <- 2.5^(-2.4)
-x
Otherwise, I'm not at all sure what your question is: can you give an
example of what you think you should get (and how to get
Rui Barradas wrote
>
>
> real^real is not necessarily real.
>
> The most well known example is (-1)^0.5 = imaginary unit.
>
Damn, can't believe it! It's a silly mistake!
Now that something wonders me is that when applying the Gaussian Hermit,
sum w f(x_i)
What happens when f(x_i) does not
Hello,
> Negative powers mean they take the reciprocal and as far as I am
> concerned, real^real is just a real number.
> Am I mistaking something basic?
Yes, you are.
real^real is not necessarily real.
The most well known example is (-1)^0.5 = imaginary unit.
When you say that -2.5^(-2.4) is r
Hi,
I know what complex number are, but I am not sure what you meant by that?
##CODES###
> 2.5^(-2.4)
[1] 0.1109032
> -2.5^(-2.4)
[1] -0.1109032
##CODES###
works fine.
Negative powers mean they take the reciprocal and as far as I am concerned,
real^real
Taking negative numbers to fractional powers gives NaNs that's
just how it works.
Unless you want to use complex numbers (which R does not by default):
as.complex(cc$x) ^ (2.5)
Michael
On Wed, May 9, 2012 at 7:22 PM, casperyc wrote:
> Hi all,
>
> I am using the 'gaussHermite' function from
Hi all,
I am using the 'gaussHermite' function from the 'pracma' library
CODES ###
library(pracma)
cc=gaussHermite(10)
cc$x^2
cc$x^5
cc$x^4
CODES ###
as far so good. However, it does NOT work for any NON integer values, say
CODES ##
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