On 11-04-17 07:51, Branimir K. Hackenberger wrote:
This is some interesting:
-8^(1/3)
[1] -2
x=(-8:8)
y=x^(1/3)
y
[1] NaN NaN NaN NaN NaN NaN NaN NaN
0.000000 1.000000
[11] 1.259921 1.442250 1.587401 1.709976 1.817121 1.912931 2.000000
So, can anybody explain this?! (Why is x[1]^(1/3)=y[1]=NaN, but
-8^(1/3)=-2?)
-8^(1/3) == (-8)^(1/3) # NA
-8^(1/3) == -(8^(1/3)) # TRUE
Thx!!!
You're welcome.
--
Sascha Vieweg, saschav...@gmail.com
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