Description:
Mathematica discussion group. (Moderated)
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Another Monitor problem
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Hello, is it possible to monitor the intermediate state of a calculation with Monitor inside the action argument of a Button? The following Monitor example without a Button works: Monitor[Do[i, {i, 10^7}], Refresh[Pause[0.03]; i, UpdateInterval -> 0.01]] However, when the calculation is started by a Button only the final... more »
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Simplification problem
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Hello mathematica community Having this system of equations: (z1==z2 && x*t==x1*t1)||(z1+x1*t1==z2+x2* t2) why a function like fullsimplify or booleanminimize doesn't simplify it into z1+x1*t1==z2+x2*t2? same question for (y1==y2 && t1== t2)||(t1/2^y1==t2/2^y2) why it is not simplified into t1/2^y1==t2/2^y2.... more »
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Piecewise with ODE and constant
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I have tried so many different ways to do this problem, that I am stuck. Its like being back I school. I would like to plot my ODE which is a curve that goes starts at 10 msec and ends at 100 msec). In the beginning there is no current delivered to the cell until time equal 10 msec. Once the current probe in inserted to the... more »
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Text on a curve
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Text on a curve Hi: Using the following Mathematica 6.0.1 code, I get a nice picture as follows: Module[{f, fs, t}, f[t_] = {Cos[t] + Sin[t], Sin[t]}; fs[t_] = D[f[t], t] // N; h = Graphics[Rotate[Style[Text[" T"], 14], 90 Degree]]; Show[Graphics[{Arrowheads[{{Au tomatic, Automatic, h}}], {Red,... more »
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incompatibilities
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Dear mathgroup, I am using the version 7 but there are some incompatibilities for example <<NonlinearModelFit`; it gives the following error message: Get::noopen: Cannot open \[NoBreak]NonlinearModelFit`\[ NoBreak]. I have used needs but it is not working. and another error ns==100; afMin==-2.5; afMax==1.5;... more »
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How can I reduce the frequency of a sine wave tia
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Do you want to superpose another frequency to get a single signal, or just plot another frequency along with the one you started with? Compare these: Plot[Sin[10x]+Cos[3x],{x,0,2Pi }] Plot[{Sin[10x],Sin[3x]},{x,0,2 Pi}]
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ODE with complex coefficients
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Does anyone have an example of a 1st order ordinary differential equation (initial condition type) with complex coefficients that can have oscillations? --V. Stokes
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Thikness of edges in a 3D graph
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Hello, I'm beginner in Mathematica ! I need some help to draw a 3D graph with different edge's thikness Can someone help me ! I give here an example of my graphs ! Thank's in advance cherif Rahal GraphPlot3D[{1 -> 2, 1 -> 4, 1 -> 5, 2 -> 3, 2 -> 6, 3 -> 4, 3 -> 7, 4 -> 8, 5 -> 6, 5 -> 8, 6 -> 7, 7 -> 8, 5 -> 10, 6 -> 11, 10 -> 11,... more »
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How can I reduce the frequency of a sine wave tia sal22
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Greetings All I have the example below which produces 10 cycles a = Sin[10 x] Plot[a, {x, 0, 2 Pi}] What Type of signal would I need to add/multiple/divide to reduce it's signal/frequency to 5 cycles? I know I can just change the number 10 to 5 but I need to combine it with another signal. what mathematical... more »
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fitting
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Hi! I am very new to Mathematica and I am failing in trying to do something very simple. I am have the following data: x = {8, 36, 74, 96, 123, 152, 201, 269, 415, 460, 444, 579, 711, 731, 602, 364, 151}; Which is a curve, similar to PDF function of Beta distribution: ListLinePlot[x] And I am trying to fit it to:... more »
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