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I am plotting flux values using contourplot3d. But I am only allowed to give two colors in contourplot3d option (eg. coloring=[red, blue]). This gives a contour plot that is a combination of these two colors. eg. But i want different colors to denote different flux ranges and so I need atleast 4 colors. Is there anything I can do? Thanks

Hello, I have about 80 equations for x and 80 equations for y. They are called Sx_0 .. Sx_80 for x and Sy_0 .. Sy_80. They all depend on parameter m.

I want to define a new piecewise function P such as,

P evaluated at m=i  is equal to [  Sx_floor(i) evaluated at i , Sy_floor(i) evaluated at i ]

For example,


I want to derive an incompressible Navier Stokes equations with Maple for Conical Coordinate System.

In the beginning I'd like to derive NS equations in the Cartesian coord. system:




NS:=Diff(V,t)+DirectionalDiff((V . Del),V)=-Gradient(P)/ro+ni*Del . Del . V


Obviously something wrong with this writing.

Please help


Hi all,


I want to know how to represent a summation of the form:

and solve for xn.

My reason is that I want to solve:for yn where MUx is the average for x ditto for MUy.



i have a question with plotting i have a vector X of length (10) and matrix U, that its size is (10,20), how can i plot the vector X with each column in matrix U in the same figure ????????????????


I wonder how the following piecewise function can be plot in maple (showing the dirac function).

f := piecewise(t < 0, 0, and (t >= 0, t < 1), 1, and (t >= 1, t < 2), (-2+t)^2, t > 2, t = 4, Dirac(t-4))

plot(f,t=-10..10) does not show the dirac function.

Many thanks


PS.  I saw a solution using op but I could not follow what was done.





I have defined an expression f. This expression f, when integrated from 18 to b, is equal to 20. My goal is to find this b value. Since the integral is very hard to solve symbolically. This is what I did:


ApproximateInt(f, t = 18 .. b, method = simpson);

by trying some random numbers v, I have found the approximate value of b.


I am trying to point plot R:= .8*theta+.87 where theta starts from 160 degrees and goes till 330 degrees. I want to see points only at 160 degrees, 170 degrees, 180 degrees and so on till 330 degrees . It should be a polar plot. If I use plot( .8*theta+.87, theta=(160/180)*Pi..(330/180)*Pi,coords=polar), I get a continuous line. I just need points. thanks

Hi everyone!

I have an urgent problem!  I am dealing with an autonomous system of 2 differential equations.

First of all I have to plot  the phase plane (x,y) but I'd like to include a constraint (x^2+y^2<1 )in my system and I don't know how to do that!

what I've done by now:

>dfieldplot([diff(x(N),N)=-3*x(N)+sqrt(6)*(y(N))^2+3/2*x(N)*((x(N))^2+1-(y(N))^2), diff(y(N),N)=-sqrt(6)*x(N)*y(N)+3/2*y(N)*((x(N))^2+1-(y(N))^2)],
 [x(N),y(N)],N=0..20, x=-1..1, y=0..1, color=black, dirfield=[30,30]);


<p>Hi </p>
<p>I have some funtio<img alt="" src="file:///C:/Users/BrianBak/AppData/Local/Temp/moz-screenshot-5.png" />ns that a generate using maple. I would like to be able to set an variable equal to the right side of these functions in matlab. I have saved the funktion in the following way. </p>
<p><img alt="" src="file:///C:/Users/BrianBak/AppData/Local/Temp/moz-screenshot-6.png" /><img alt="" src="file:///C:/Users/BrianBak/AppData/Local/Temp/moz-screenshot-7.png" /><maple>with(CodeGeneration)</maple><br />
<maple>Matlab(x^2+y^3, output = "file.txt")</maple></p>













How do I prove this on maple through a graph? 

Here is my problem:

How many horizontal asymptotes can a rational function have? upport your answer with an explanation in your own words along with graphical support using Maple.


Plot on the same coordinate system:f(x)=square root of x  and g(x)= - square root x + 4-18 then use Maple text to describe in f(x)words the change in to create g(x). 

Hello, recently I am trying to generate fortran codes for the proc below:


Give an example of a rational function with vertical asymptotes at x=6 and x=(-2) with a zero at x=3. Show both the function rule and a graph using Maple illustrating the required asymptotes and zero.

Please show me what function to use to graph this.  I'm very lost.

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