herclau

Mr. Hermes Rozsa Iglesias

1028 Reputation

13 Badges

16 years, 257 days

MaplePrimes Activity


These are questions asked by herclau

It will be possible to manipulate this behavior with options "dsolve / event" or "dsolve / Error Control"?

> restart;
> Digits;                                10
> ode := sin(x(t))*(diff(x(t), t, t))+x(t)^3 = t*sin(x(t));

> ics := x(0) = 0, (D(x))(0) = 0;

> s := 250;


Hola,
How can leave a trail/trace of black point in the yellow and purple screens? Something very similar to the option "animate / trace."

SVD-filtering.mw

Make it possible to take the numerical data of each screen from the "plottools [getdata]"

Gracias

 

Hi,

How to avoid the following warning with the command NLPSolve / modifiednewton:
Warning, convergence is not assured; examine Hessian values, or consider raising tolerance

 

Metodmodifiednewto.mw

How to implement the following operation in Maple, as in MATLAB:

A(~isprime(A)) = 0

A =      0     3     2    13 
           5     0    11     0     
           0     0    ...

Interesting behavior!!

> restart
> N := 150; L := LinearAlgebra[RandomVector](N);

                              150

> st := time(); for j to 10^4 do ArrayTools[SearchArray](`~`[`=`](L, max(L))) end do; time()-st;

             ...

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