• ← Limit
• → O

NIntegrate

WMA link

NIntegrate[expr, interval]

returns a numeric approximation to the definite integral of expr with limits interval and with a precision of prec digits.

NIntegrate[expr, $interval_1$, $interval_2$, ...]

returns a numeric approximation to the multiple integral of expr with limits $interval_1$, $interval_2$ and with a precision of prec digits.

• • NIntegrate[Exp[-x],{x,0,Infinity},Tolerance->1*^-6, Method->"Internal"]

• • NIntegrate[Exp[x],{x,-Infinity, 0},Tolerance->1*^-6, Method->"Internal"]

• • NIntegrate[Exp[-x^2/2.],{x,-Infinity, Infinity},Tolerance->1*^-6, Method->"Internal"]