I'm currently attempting to solve a non-linear programming problem. I get the message "Warning, limiting number of major iterations has been reached". Is there any way in which I can increase the number of iterations? Thanks, Christian.

I tried to solve two coupled non-linear ordinary differential equations that arises in case of natural convection from an isothermal vertical flat plate. The problem is a boundary value one. The boundary conditions for the problem are at eta=0, f '(0)=0, f(0)=0, g(0)=1 and at eta=infinity f '(eta)=0, g(eta)=0. f ' should go from zero to zero through positive values but after a certain value of eta f ' is going to negative values until the value of eta =infinity at which it...

fc := exp(btp*s*cos(2*Pi*x/a))*exp(-(I*2)*Pi*n*x/a)

int(fc, x = 0 .. a)  assuming a > 0, s> 0, btp > 0, n::integer;

Thanks in advance.

Hi all,

Is there any way with "pdsolve" or 'dsolve' to get the general solution of Laplace equation in polar coordinates with boundary onditions as :

restart:sys[1] := [diff(A(r, theta), r, r)+(diff(A(r, theta), r))/r+(diff(A(r, theta), theta, theta))/r^2 =0, D[2](A)(r, theta0) = 0, D[2](A)(r, theta0+beta) = 0, D[1](A)(R1, theta) = 0, A(R2,theta)=f(theta)];

pdsolve(sys[1]);

Thanks in advance

How do i use Maple to find all the pairs of consecutive primes between 2 and 500, that is, all the pairs (n, m) such that abs(n-m)

i have an image and would like to perform a canny edge detection. one of the first steps is the convolution of the image with a smoothed derivative filter, i.e. a gaussian. the problem is, that i don`t know, how to convolve my collection of discrete pixels (the image) with a 2D gaussian. how do i get an integer-valued convolution kernel that approximates a Gaussian with a variable sigma?

I want to simulate the model as show in Fig.1 

Its equation of movement is 

and its mathematical solution can be caculate as Fig. 2

i need tooo solve this asap help me

-x+y=4

x^2+y=3

I've been using Maple for many years in the good-old "classic worksheet" mode. After purchasing Maple 14, I decided to use the "new" worksheet mode (I know it's not that new, but I always objected to use it) to get the most of the 64 bit program with my 64 bit Windows 7...

1. My first problem is that "I cannot copy any output!" either to paste to an input line or to a text file!

My Tools-Options-Display section is,

Input display: Maple notation

Hi! sorry me for my bad english =(

Can you help me with such problem? -

I need to solve a partial differential equation with 3 independent variables.

i see such answer - that maple doesn't solve such type of equations and i am very sorry about it =(

why matlab solve them and maple doesn't solve? the problem isn't hard - just give numeric solution, before i think much better about maple, and now i see that maple is rather limited program.  T_T

Hello everyone.

When doing calculations in Maple, is it possible to have Maple use some number of significant figures (as set by the Digits=n command) while only showing a specified number in the output? What I would like is a command like the displayprecision one, just with significant figures instead, so I could avoid round-off error, but still only have the relevant number of digits shown.

Thanks in advance.

I have two transfer functions,tf1,tf2, which describing two linear systems respectively.

tf1:=TransferFunction(sys1),tf2:=TransferFunction(sys2)

Sometimes, the transfer function is very complex which contains so many symbols, and retyping them manually is very time consuming.

Now, I want to connect them in series,namely,tf3:=tf1*tf2, of course, I can extract them respectively,that is,

a:=tf1:-tf[1,1],b=tf2:-tf[1,1],then multiply a and b,c:=a*b,and...

Hey there,
i have a table of points that describe a rectangular function and i am trying to calculate the middle of the maximum or minimum (depending on the function) of this datacloud. my first attempt was to spline the data and then use the minimize command, however, i am not sure if the minimize command gives me the right result because it depends on my interval length. the second attempt was to calculate the derivative of the spline. but how do i get then the exact middlepoint?...

i am trying model my one of the problems.

i am the beginner to maple software so sometimes it become hard to do simple tasks here i have the problem

i want ot multiply u(x,y) with B where B is a 3*3 matrix but i get the answer zero,

as we all know that it will be point wise multiplication.

kindly help me how to do it.

i will be thankful if somone can give me the email for future correspondence and help.

Problem of integer optimization

35*x+40*y+50*z -> min

.4*x+.5*y+.8*z >= 2

x,y,z are positive integers

When i call

> LPSolve(35*x+40*y+50*z, {x >= 0, y >= 0, z >= 0, .4*x+.5*y+.8*z >= 2}, assume = integer);
                        [135, [x = 1, y = 0, z = 2]] -- right solution