Okay, So I'm running Maple 11 on a Mac with 4 gig of RAM. However my mserver keeps crashing due to running out of memory. The intuitive solution to this is obviously to increase the datalimit through kernelopts, when I try to do this I am informed that I can't exceed the hard limit, i.e.: >kernelopts(datalimit = 409601); Error, cannot raise the datalimit above the hard limit As we've already established I've got rather more memory available than that and it doesn't seem to be restricted by the unix kernel: ulimit -a core file size (blocks, -c) 0

How can I give the general solution to v''(t)+v'(t)+v=0, because I can only draw the solution. deq:=diff(y(x),x)=x^2+x+1; value(%); Thanks nevulosa

Any tips on how to solve fixed endpoint problems in the calculus of variations?

For instance,

Find the extremal for:

int(diff(x(t),t)^2/(t^3),t=1..2) with x(1)=2 and x(2)=17.

The correct answer is x(t) = t^4 + 1.

Hello I have a table of x values and y values and after plotting them I found a trend line by least square. But at the moment of plotting the values and the trend line, this last one doesn't reach all the plot width. How can I enlarge its reaching? Thank you,

hello, first post here.

i'm attempting to solve the 1 d heat equation using a finite difference scheme, with continous boundaries eg.

 

Where I can get right and complete instructions for read .txt files from Maple 7 ? 

I follow the instructions like:

L := ImportMatrix( "data.txt", delimiter=" " );

for read a deta.txt file, or others like fopen, etc, and do not get the data.

 

How do I plot in the simplex with Maple [11]?

I am working with variables x1,x2,x3, each non-negative, and summing to one.  Thus, the triangular 2-simplex is an easier environment to work in.

Thank you in advance,

Colin Rowat, Department of Economics, University of Birmingham

 

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Hello All,

Can I get maple to give me a hint as to what test for convergence to use with infinite series?

 

Thanks!

hi

i have to calculate a extreme value for a box that is open on one side that should have a volume of 32.

V = x * y*z

For the surface ob the box-sides i used this function:

O = 2xz + xy + 2yz

my idea was to solve this in maple using lagrange because i ve a side condition

with(RealDomain):
L:=(x,y,lambda)->x*y + 2*x*z * 2*y*z +lambda*(x*y*z-32);
solve({diff(L(x,y,lambda),x)=0, diff(L(x,y,lambda),y)=0, diff(L(x,y,lambda),lambda)=0});
evalf(%);

it gives me for my values x = 32/x*y; y = y; z =z

Hello! I would like to know if there is a way that Maple finds the equation on its own. I have a table of x values and y values and after plotting them I would like to find a trend line by least square.

I want to create a list of the first 100 prime numbers.  I remember vaguely the use of seq and type but I can find it in the differents forums.  Could someone state it again for me.  thanks!

Hi,

I have a matrix

 

A:=<<1,-3,2>|<-2,6,-4>|<2,-1,5>|<3,1,8>|<-1,-7,-4>>;

 

how do I find a basis of im(A)?

Thanks

 

Chen

Hello everybody,

I am using the GF package from Maple to solve an equation with elements of a given galois field. It looks like that:

field := GF(7, 1):

eq1 := x = y^2:
eq2 := x^2 = y^4:
equationToUse := eq1:

isSolving := false:
use field in  
    isSolving := is(eval(equationToUse, [x=field:-random(), y=field:-random()]));
end use:

if isSolving then
    print(`Equation solved`);
end if:
 

The Maple Manual says to use a parametric plot to graph a circle.  I've been fiddling with the syntax  but can't seem to get it right.  I want to plot

x^2 - 2x + y^2 = 0,           which can be written as

(x-1)^2 + y^2 = 1

Can someone please give me the PLOT command to plot this circle?

Allan