User Portlet
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| Hi Sort of confused by this error (highlighted in yellow) below. Did I not created a valid region with RegionUnion ? I can see it, it is indeed a solid with closed boundaries. Why would any command (I've tried all of them) seeking a boundary come... |
| Attempting with the code below to create a region from a surface of revolution --not very successful, although I can plot the surface. Any Suggestions ? (Code is attached). Ultimately I would like to make a solid mesh from the region, but I seem not... |
| Hi, Are there any tips to help the solving and plotting for FF1 go somewhat faster ? (I think the plotting is the real issue) I am indeed using a decent Laptop....but the solving and plotting may take more than 20 min + Regards, John ... |
| I seem to only be able to show the end points of a meshed line --how can I make those middle points (should be 2 through 4 in blue) appear ? See attached. Regards and Thanks, John ;-) Needs["NDSolve`FEM`"]; ?=ImplicitRegion... |
| Hi, Using drawing tools I have created a sketch while in a presentation. I would like to add some text to the picture. I find no easy way to format the text for bulleted items.....any ideas ? ( attached for reference ;-) Many thanks in... |
| Hi, Is there a way I can do slide sorting (as in Power Point) within a Notebook presentation ? Kind regards, John |
| Malte, One last request (if possible) could you give me some pointers with regards to plotting specific state responses. I have copied the use of "%" in my plot command, and not sure how that is working w.r.t the state space matrix. Please see... |
| a = {{2, 3}, {3, 4}, {1, 1}} // MatrixForm b = {2, 7} // MatrixForm a*b N[{a*b}] Call me a newbie, but I could not get a single matrix result Could not show a result or simplify to one matrix ? (always had two... |
| Solve [ x1^2 + y1^2 == 6^2, x2^2 + y2^2 == 14^2, y2 == ((y1 - y2)/(x1 - x2))*x2, 0 == ArcTan[((y2 - y1)/(x2 - x1) - y1/x1)/(1 + ((y2 - y1)/(x2 - x1))*(y1/x1))], {x2, y2}] Hi I'm a newbie to Solve...Can some... |
| speed = 10*Quantity[1, "Miles"/"Hours"]; period = 10*Quantity[1, "Feet"]; ampl = Quantity[0.3, "Feet"]; w = (2*Pi*speed)/period; yy[t_] := ampl*Sin[w*t] Plot[Evaluate[yy[t]], {t, 0*Quantity[1*"Seconds"],... |