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| Looks difficult, even setting all constants equal to 1 one gets In[8]:= DSolve[{D[y[x, t], {t, 2}] + D[y[x, t], {x, 4}] + D[y[x, t], {x, 4}, t] == 0, (y[x, t] /. x -> 0) == 0, (D[y[x, t], x] /. x -> 0) == 0, (D[y[x, t], {x, 2}] /. x ->... |
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| I want to solve these equations by the Runge kutta method can you check it out. |
| D(sqrt(2+5x),x) at x=1 worked for me. http://www.current.wolframalpha.com/input/?i=D%28sqrt%282%2B5x%29%2Cx%29+++at+x%3D1 |
| Wooow ! Perfect, Marco ! Thank you immensely ! It got perfect ! Scabral |
| Physics problems should be solved from first principles In[8]:= xsoln[t_] = DSolveValue[{x''[t] == -a, x'[0] == 29, x[0] == 0}, x[t], t] Out[8]= 1/2 (58 t - a t^2) In[10]:= Solve[{xsoln[tf] == 71, xsoln'[tf] == 0},... |
| First I define a simple test animation: p = Manipulate[ Plot[y, {x, 0, 1}, PlotRange -> {{0, 1}, {0, 1}}], {y, 0, 1}] Then I export it to an .avi file, which I later convert into an animated .gif with Photoshop: ... |
| Attaching a notebook (.nb) file with all the code needed to duplicate the problem would help potential helpers. |
| Well, Manipulate is a lexical scoping construct, like Module. Consider: var = "global"; func[] := var; Module[{var = "local"}, func[]] This correctly returns "global" and not "local", because the var scoped by the Module is different from... |
| The same here. When will it be available in Russia for example? And does it's appearance depend on the country or what is the division at all then (I mean the priority for different users to get a new version)? |