Linked Questions

I am trying to fit data to a sum of Gaussians. This data is found in a file called lpeff.txt. So I write the following code: ...

Please I do not understand why Mathematica 11.2 version evaluates numerically the value below Exp[-800]//N (* 3.667874584178*10^-348 *) while 11.3 and 12 ...

There is documentation of the incompatible changes made to Mathematica with each major release: Incompatible Changes since Mathematica Version 1 Unfortunately that documentation simply stopped ...

I migrated a numerical model code from Python to Mathematica and am surprised how much faster the Python version runs. Profiling of the Python version tells me that it is about 100 times faster (120 ...

In contrast to earlier versions, Mathematica 11.3 and 12.0 generate lots of underflow errors from my code, e.g. ...

Suppose we plot Plot[Exp[x] Exp[-x], {x, 0, 1000}] This equals $1$, as expected, until around $x = 750$ where the curve drops sharply to $0$. Clearly this is due ...

In a programme I'm running, at a certain point there's a multipplication of variables that gives underflow... For example $c=c_1\times c_2$. Is there anyway to check if that multiplication gives ...

The function at issue: ...

I'm having some troubles with the following code I wrote in MMA 10 some time ago: ...

I have a simulation code I developed in Mathematica 10.2. I use Nintegrate to calculate some values. It works fine and each run takes about 170s. However When I run it in my university's computer (...

Some built-in functions (like Exp) give an arbitrary precision result, even when the argument is a machine precision number. Example: ...

I am solving pde. For the post processing bvp, there is solution given in output which is the solution from mathematica version 10.0.1. Output from above in mathematica 10.0.1 is, But when the similar ...

I am trying to implement an algorithm described for example in this paper, Section III, or referenced here, from where numerical parameters have been taken. I added the snippet I use to compute the ...

It seems like Mathematica version 12 sets arbitrary underflow precision depending on the function, but I would like the underflow precision to be same as what was for previous version of Mathematica ...