Le forum de XCAS

Thank you. That would have taken me a long time to figure out!

Matt

Is there a command that will convert:

(V1/V2)^k

to

V1^k/V2^k

?

by clicking on an HTML file android should ask what to open it with. If it already has an association you have to clear the default association to enable the chooser.

For Samsung:
https://www.samsung.com/my/support/mobi ... on-android

I have a small problem. Integrating the diff command works well up to the 3rd derivative <meaning diff(y(x),x,3)>
I actually use this. Fixable?

Matt

I am still curious about what's shown in eq18 through eq22 in my example. In eq19 I "recreate" the first equation in eq18 by setting the left hand side equal to the right hand side. After that recreation the normal command functions as I like (eq20 and eq22). However, normal(eq18) does not even thou...

That would be an easy command to create with xcas programming

When I left-click on an example I get the whole example. Can you clarify?

Thanks, I'll try that.

I noticed something interesting. I work a lot with integrating differential equations for bending of beams. After finding the equations for the slope and deflection of a beam, I need to calculate those values at a point on the beam. I have attached the .xws file and the pdf I can create from the Lat...

I know it was recently added. I found out about it here after I asked a question

viewtopic.php?f=19&t=2867

Matt

By the way, I usually collect my initial parameters in an array which means I can substitute them all at once into an equation by simply referencing the array name in the 2nd argument to subst. I also do this with solved variables as I progress in a solution. For example: eq1:=tran(x1=5.368,y1=2.294...

I use "quote" as the third argument (without quote marks) to substitute without simplification. This is very useful for teaching, as it is more like algebra done on paper. Is there some other intended use?

Use:

subst(a*x^2+b*x+c, [a = -6,b = -4,c = 2]); [ENTER]

then you can have as many as you want

I have done a lot of work (programming in Xcas and cygwin) to make the output from Xcas more understandable to students. Intermediate steps in the Algebra and Calculus seemed more important to students.

By the way, thank you very much for this addition to subst. I use it extensively (with autosimplify off). It makes my derivations for class much more understandable.