Hi

I am trying to solve a pde equation with matlab , but i cant, please guide me:

eq_u_0 := diff(u[0](x,t),`$`(x,4))+a*u[0](x,t)+diff(u[0](x,t),`$`(t,2))=0;

bc_u0 := u(0,t) = 0, u(pi,t) = 0, diff(u[0](x,t),`$`(x,2))(0,t) = 0, diff(u[0](x,t),`$`(x,2))(pi,t) = 0, u[0](x,0) = a*sin(x), diff(u[0](x,t),t)(x,0) = 0;

pdsolve(eq_u_0,{bc_u0});

with convert and FormalPowerSeries one can find power series of some functions. WIth the function int one can sum / make integrals of expressions.

I am new to Maple and have tried finding the sum function of the product of two power series :

in both cases sum of n from 0 to infinity
 
how to program Maple to find the sum function of f(x), g(x)
and g(x)*(f(x) ?

a:=[ [ 6,3],[5,6],[6,6],[5,8],[4,7],[5.5,10],[6,12],[5,11],[5,13]]

how do I select the list sets, say that contain in the first position 6.  Something like

if a[i][1]=6 then put the pair in a list.

Hi everyone.

For example, I have

...

plo[i] := plot([u[i](t), v[i](t), t = k[i] .. k[i+1]])

...

Now I want to draw all these plots on the same picture:

with(plots):display([plo[1],plo[2],plo[3],..........................................]);

How can I place all plots in brackets? Number of iterations varies, and there are a lot of sets of iterations, so I need a universal way to do it.

Tried to use Array() but didn't suceed.

Thanks for help!

Hi,

I try to plot the deflection of a skyscraper. Therefore I need a very long calculation and the constants c_1 to c_14.

In View 16983_skyscraper.mw on MapleNet or Download 16983_skyscraper.mw
View file details you can see my calculation.

Dear fellow forum members,

I have decided to write a simple package for Maple. No decent package is complete without documentation.

Dear All,

Is it possible to make Maple assume all variables in a worksheet are real, instead of having to apply to the 'assume' command to each variable indiviadually? Thanks!

Bartek

Can someone point me in the right direction?  I want to simplify equations of the type:  4*2^n into 2^(n+2).

Thanks!

I got a function to express v*t=(S₀-S_t)+K_m*ln(S₀/S_t). The only unknown here is S_t. I solve it for S_t and get

S_t=LambertW((S₀*e)/K_m)*K_m)

How to plot (x-1 < 0 /\ y =0)?

Thanks in advance.

Can we add our own custom symbol shapes to the maple library to use with the command symbol=  ?

God forgive me, I know this is a bad way to start asking for help, but it is such a PITA to figure out how to get WYSIWYG representation of even simple Maple worksheets onto this forum.  I searched the catacombs of Rome looking for a simple way to attach a couple of (very small) Maple & Matlab files relevent to my current angst, but to no avail; the dragon of legacy unix protocol has slain its latest unsuspecting victim.

Hi everyone, seems I'm new here!

There is my first request: