is there a maple function or does anyone have a proc that will return the number of significant figures given a number? For example, when given 0.38, the proc will return 2, or when given 2.897, the proc will return 4.

Hi all. I am trying to find the cube roots of -sqrt(6)-sqrt(18)*I in polar form. I have used the following commands but it does not convert the argument properly. Can anyone help? readlib(polar); sola:=solve(z^3=-sqrt(6)-sqrt(18)*I,z); polar(sola[1]); polar(sola[2]); polar(sola[3]); I have also used the following but it could not simplify the argument/angle. sola1 := simplify(convert(sola[1], polar)); Can anyone please suggest a fix to this? The argument...

I have got the following instructions of computing the required trajectories (orbits). They have been done with Maple V3. I cannot get them going with Maple 16. I have just started with Maple and cannot see the mistake in the instruction. Can anybody help me? Thanks!

> with(LinearAlgebra);
> "A, B = Payoff matrices for players";
> A := matrix(2, 2, [4, 2, 1, 3]); B := matrix(2, 2, [1, 4, 3, 2]);
> "T defines the time interval [0,T], s is the step length";

I want to calculate above integral in Maple15,  the parameters n_1, n_2 and n_3 are all positive integers.
I tried to input the following command: int(int((1-x)*(1-y)(x+y)*(x^n_1)*(y^n_2)*(1-x-y)^n_3, y=0..1-x),x=0..1);

After I pressed enter it then appeared an error message: "Error, unable to match delimiters"

Can someone help me on how to solve the following pde for G

Eq1 := ((z[1]-1)*lambda+(z[3]-1)*gamma)*G+(1-z[1])*delta*(diff(G, z[1]))+(N*z[3]-z[2])*kappa*(diff(G, z[2]))+(1-z[3])*mu*(diff(G, z[3]))+(z[2]-z[1]*z[3])*beta*(diff(diff(G, z[3]), z[1])) = diff(G, t)

Hi,

How to avoid the following warning with the command NLPSolve / modifiednewton:
Warning, convergence is not assured; examine Hessian values, or consider raising tolerance

 

Metodmodifiednewto.mw

Dear friends, I encounter the following problem. Let k and i be two given positive integers such that k>=2i>=4. How to find all nonnegative integers tuples (x_1, x_2, ..., x_i) such that k-2i<=x_1+2x_2+...+ix_i<=k-i? The buildin command "isolve" seems not work. Thanks.

Hi

I am a PhD scholar at the University of Queensland. I am reviweing a paper titled as "A similarity solution for laminar thermal boundary layer over a flat plate with a convective surface boundary condition"(the pdf is available online). In this paper the author has written a MAPLE code. I copied the same code in MAPLE but could nt succedded. The author used the Runge Kutta RK5 Method to solve the model.

Please help me to solve the same model...

... is finance.dll missing in Maple16 (64 bit), as it was in Maple15 (64 bit), so you have to install the 32 bit version instead?

Is it possible to move the finance.dll-file from Maple16(32-bit) to Maple16(64-bit)?

Jestrup

Hi there,

I've written a maple worksheet file (*.mw) that does some long calculation and got a result.

If it matters, the result is a 3X3 matrix with different parameters (not only numbers). 

So far so good. 

I want to use this result in another maple worksheet file.

Can I import only the result by somehow referancing the filename and equation number in that file?

Just...

how to plot log(-1+e^t) t=0..2*Pi

Hi.

 

I writing a code with using matlab package.

when i using "setvar" maple is showing the folloeing error:

"Error, (in Matlab:-openlink) Can,t find matlab's Engine library, libeng.dll. windows reported"

 

but this dll is in matlab directory,

i,m using, win 7, 64 bit, matlab 2009b 64bit, maple 14.

Hey,

Is there a way of searching a list for two consecutive numbers?

Eg. I have the sequence:

Hi!

I've got this annoying problem and it's quite simple reproducible.

> with(GraphTheory): G := Graph({{a, b}, {b, c}, {c, d}}); Edges(G);

Edges(G) returns me

Error, (in EdgesExt) external library libgraphtheory.so could not be found/used

 

It's the first time I encounter such a problem and have no idea on how to solve it, any advice?

I can see that libgraphtheory.so...

Hi, all. The problem is following. I have an ODE where right hand side is an integral function. For simplicity consider the following example:

 

with(DETools);

f:=q->int(exp(cos(s)), s=0..q);

DEplot({diff(x(t), t) = f(t)}, [x(t)], t = 0 .. 1, [[x(0) = 1]]);

 

this code doesn't work:

Error, (in DEtools/DEplot/CheckDE) extra unknowns found: s