2018年3月8日 · Using Mathematica I need to evaluate the integral of a function. Since it is taking the program too much to compute it, would it be possible to use parallel computation to shorten the time needed? ...

2009年7月3日 · NIntegrate::slwcon: Numerical integration converging too slowly; \ suspect one of the following: singularity, value of the integration \ is 0, highly oscillatory integrand, or WorkingPrecision too small. >> NIntegrate::ncvb: NIntegrate failed to converge to prescribed \ accuracy after 9 recursive bisections in y near {y} = {1.5301}. \ NIntegrate obtained 2.817606086983439`*^-17 and \ 5. ...

2011年8月17日 · The integral looks like a Cauchy Principal Value type integral (i.e. it has a strong singularity). That's why you can't apply standard quadrature techniques. Have you tried PrincipalValue->True in Mathematica's Integrate?

2024年2月7日 · I am trying to integrate a function in Mathematica that uses eigenvectors and eigenvalues from a matrix. Using NIntegrate I am getting zero. The error says ...

2009年8月5日 · Hello, I have the following integration: I want this integral to be evaluated numerically in Mathematica as a function of , how can I do that? Regards

2009年10月8日 · Hello, I have the following Mathematica code warnings: NIntegrate::slwcon: Numerical integration converging too slowly; \\ suspect one of the following: singularity, value of the integration \\ is 0, highly oscillatory integrand, or WorkingPrecision too small. >> NIntegrate::inumri: The...

2011年12月16日 · Is there a built-in routine for doing numerical integration in Mathematica given two lists of data as {x1, x2, ..., xn} and {y1, y2, ..., yn}? I want to do something like trapezoidal integration or others.

2011年12月2日 · Welcome back. I have a couple of questions. Would you mind if I did some formatting, including removing the Print statements? I'd like to include just the core code as it helps to see what the code is doing. Secondly, in the definition of Nw you use := which re-evaluates every time Nw is called. Is this intentional, and why? Third, the Table in Nw only generates a single row (i is always 1 ...

2011年10月12日 · The & tells Mathematica that it is a pure function. Prefix and postfix form can only accept a single parameter, infix (1 ~ #1 + #2& ~ 2) two params, but Apply (@@ and @@@) will accept arbitrary numbers of them.

2011年12月20日 · I would like to get a different solution to a problem I have solved "symbolically" and through a little simulation. Now, I would like to know how could I have got the integration directly using