
Problem with nested NIntegrate[]
Posted:
Oct 7, 2006 7:37 AM


Hello,
I encountered some strange behaviour of NIntegrate when I use a somewhat neseted structure of several  in my example of two  NIntegrate[] functions
NIntegrate[NIntegrate[y,{x,1,1}],{y,1,1}]
This gives me the error
NIntegrate::"num Integrand y is not numerical at {x) = 0
Why does the inner NIntegrate function not know, what value is currently assigned to y...
I hope someone can shed a little light on that seemingly paradoxical behaviour.
thanks in advance
Eckhard

