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NIntegrate::nlim

Details

  • This message is generated when non-numerical limits of integration are encountered in NIntegrate.
  • Off[message] switches off the message; On[message] switches it on. For example: Off[NIntegrate::nlim].

Examples

Basic Examples  (2)

If the symbol b in this example does not evaluate to a number, a warning message is generated and the integral is returned unevaluated:

Wolfram Language code: NIntegrate[x Exp[x], {x, 0, b}]

This shows a correct use of NIntegrate:

Wolfram Language code: NIntegrate[x Exp[x], {x, 0, 3}]

In a multidimensional integral, the warning message will include a point on the boundary of the region of integration:

Wolfram Language code: NIntegrate[x y, {x, 0, 1}, {y, 0, b}]

If a symbolic limit of integration is needed in a definition, you can use a pattern to prevent the rule from being applied until a numerical value is inserted for the limit:

Wolfram Language code: f[b_ ? NumberQ] := NIntegrate[x Exp[x], {x, 0, b}]
Wolfram Language code: f[3]

Unset the rule for f:

Wolfram Language code: Unset[f[b_ ? NumberQ]]