Hello,

Do you know why or what could be the problem for SMath not translating properly a dy/dx. I need to write these operators in Maxima to solve a differential equation...



Thanks in advance,

Alvaro

Differentiation.sm (9,34 КиБ) скачан 953 раз(а).

I have found a workaround, with eval_string() from Maxima.



Differentiation.sm (13,39 КиБ) скачан 946 раз(а).

Wrote

Hello,

Do you know why or what could be the problem for SMath not translating properly a dy/dx. I need to write these operators in Maxima to solve a differential equation...
...

Hola tocayo. Is this the problem?: always it is diff(y,x)=0, but diff(y(x),x) remains unevaluated and is the correct form to express the derivative of a function.

Best regards.
Alvaro.

Hola tocayo, muchas gracias!

Problem solved:

You are mixing two CAS that will not pass QA [Quality Assurance].
My understanding is that what was usable from Maxima is native in Smath.
Smath native derivative operator works from book library.
sin(x), ln(x), exp(x) ... OK
Gamma(x), erf(x) ... zap. We have them otherwise.
Cheers ... Jean

Differentiation.sm (17,82 КиБ) скачан 966 раз(а).

Thank you Jean, I am trying to test some symbolic solutions of differential equations just for a course video where I show some of the capabilities that are not present in Mathcad (Prime).

Wrote

Thank you Jean, I am trying to test some symbolic solutions of differential equations just for a course video where I show some of the capabilities that are not present in Mathcad (Prime).

Very few DE have symbolic solutions, unless from Handbooks.
Few of them are available in Smath ... will be back on that.

Wrote

I am trying to test some symbolic solutions of differential equations just for a course video where I show some of the capabilities that are not present in Mathcad (Prime).

If Mathcad Prime does not solve those attached ... Oh !
Cheers ... Jean.

ODE Symbolic 4_Flies.sm (130,62 КиБ) скачан 986 раз(а).
ODE Symbolic Bernoulli.sm (11,38 КиБ) скачан 1004 раз(а).
ODE_Laplace 1rst [Type 2].sm (22,68 КиБ) скачан 768 раз(а).
ODE Symbolic Verhulst [Logistic].sm (25,55 КиБ) скачан 835 раз(а).
ODE Symbolic Lambert.sm (21,81 КиБ) скачан 986 раз(а).
ODE_Laplace 1rst [Type 1].sm (24,7 КиБ) скачан 798 раз(а).
ODE_Laplace 2nd [Type 3].sm (34,62 КиБ) скачан 857 раз(а).
ODE Symbolic Eiffel.sm (21,45 КиБ) скачан 947 раз(а).