can someone please show me how to plot this in maple as a directional field w(t):=(1/17.5)*(2500-exp((-1/200)*t)(2500-17.5*w)); thank you very much

I want to take a 2 x 2 matrix and use it to determine the unstable and stable manifolds of a point in a torus. I then want to graph the manifolds in a unit square. Does anyone know how I can do this?

Please give a clue... I would have expected that if diff(Fu,v); evaluates to zero (and if all functions involved are nice, say entire), then the following would be equal: int(int(Fu*Fuv,v=0..infinity),u=0..max); int(Fu*int(Fuv,v=0..infinity),u=0..max); But Maple does not agree... Am I missing something?

Hello

The following is a sample code that I tried in maple 10 standard.

My problem is that whenever a plot contains a function with negative values, a usual plot displays it as it should, but when i try to display it on a log scale, all i get is an empty plot

sample code:

f:x=-5;
plot(f(x), x = -10 .. 10, y = -10 .. 10, axis = [mode = log]);

this gives out an empty plot, with axis in range of 10^0 to 10^(-6) on both axes - maple seems to ignore the instruction to display negative values.

perhaps it would also be helpful if someone could point out how to turn these values into decimals.

Hi I have the following maple file. Is anyone able to convert the maple code of the calculation of the reflected lines to the simple mathematical steps which are used to calcualte it. The calcualtion of the outgoing ray is from: if (abs(dr) > 0.001) then # if slope = 0 no outgoing ray > m := (dr^2 - 1)/(2 * dr): > ix := (height - y)/m: # > if ix <> tx := -width: > ty := y + m * (tx - x): > elif # Calculation of outgoing ray > ix > width then #

Hi there, Its the rookie again. Does anyone know how to apply a function, say tanh to every element of a matrix? I have looked at rtable_scanblock and maps but not too sure? I think I might need to write a procedure but again, I am not too sure. Regards, Steve

hello i am a final year maths student very inexperienced with maple. i am trying to obtain results with maple to show an algorithm in practice. the algorithm is a variation of an SOR algorithm used to solve an optimization problem. i realised that because the next term in the sequence (x^i+1) generated by my algorithm depends upon itself as well as x^i, i would have to try to compute each component of the vector x individually because the first entry in x^i+1 is only dependent on x^i, then the second entry in x^i+1 is dependent on x^i and only the first entry of x^i+1, which should have just been computed, etc.

I have a problem with this code. Have you a solution? Thanks bobic View 1826_polinomio_classico_tang_fact4.mw on MapleNet or Download 1826_polinomio_classico_tang_fact4.mw
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Hi I have been trying to extract the data from an eigenvectors() command to an Excel file. I have tried some basic writedata() commands but without luck. I´m guessing that the "strange" format of the output from the eigenvectors() command: [eigenvalue1, algebraicmultiplicator, [eigenvector1]], [eigenvalue2, algebraicmultiplicator, [eigenvector2]], and so forth is what is causing the problem. Does anyone know how I can do this?? Would mean alot to me if anyone does since it is eigenvalues and eigenvectors from an 31x31 matrix....ehhm :) Best regards Einar

I wonder if someone could help me with the following situation. I copied the procedure 'differentiate' shown on p62 of the MAPLE10 Aadvanced Programming Manual. When I fed this proc w/ the parameters 2 - x + x^2 + 3*x^9,x as indicated on pg. 63 I did not get the result shown in the book. View 2292_P62 AdvancedProgrammingGuide.mw on MapleNet or Download 2292_P62 AdvancedProgrammingGuide.mw

Hi I am not quite sure why the variable,(Tw) is not plotted. It is dependent on all the variables evaluated in the ode calculations but yet the wall temperature, Tw, is not evaluated. Anyone could tell me why? Thanks a lot Elinor View 3860_extent of reaction (COKE).mw on MapleNet or Download 3860_extent of reaction (COKE).mw
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Hi everyone, Could you please have a look at my maple file. Im trying to solve a set of 4 differential equations but maple takes ages to solve and doesnot give the answer at the end either. The reason can be that the equations have to high power. Do you know any other dsolve method I can use or anything I can do to fix this problem? Thank you very much! Jinny View 3868_Pressure drop 2.mw on MapleNet or Download

Hi, I created a scatter plot in a Maple 11 Worksheet by creating a list (below) and right clicking and using the Plot tools. However, I want to graph a function on the same scatter plot. Can this be done? L := [[32, 6], [48, 14], [64, 24], [80, 38], [96, 55], [112, 75]]

Is there a package available in Maple that converts between number systems ? e.g., binary, octal, hexadecimal. v/r,

Thanks to all the wonderful and timely help I received concerning my previous troubles with the LegendreP function. It was all helpful. I think I'm very bad at procedures, but I struggled in an effort to gain more personal knowledge, in addition to solving this problem and came up with a very simple and rudimentary procedure. It is called P[legend](l,m), where l and m are the two arguments received in that order. Can anyone look at this procedure and suggest improvements for efficiency, aesthetics (more elegant simpler methods), possible bugs, etc. Your critiques on my effort would be greatly appreciated.