Hi all,

Wondering if there is a way to change the HUE color range that will be used for listdensity plot.

Currently default setting is to use the full HUE color. But what we need is a shorter range, e.g., only from orange to blue.

Can it be achieved?

Or the PLOT structure has to be used?

This is the code i am using now.

Is there any function that we can sort a list / vector?

What abt a matrix? e.g.

M:=Matrix([[2, 5], [4, 0], [3, 9]]);

The sorted matrix (based on its first column) will be:

Matrix([[2, 5], [3, 9],[4, 0]]);

hello

I use

plots[odeplots](dsol,[t,(D(X[5](t))(t),0..5,numpoints=100);

when dsol=dsolve(..........) which is a procedure to plot first derivative of X[5] now I wanna know what should I use to plot second derivative of that

I used

plots[odeplots](dsol,[t,(D[1,1](X[5](t))(t),0..5,numpoints=100); but nothing shows up

and some other commands none of them works for me.

Thanks

bye

Is there any maple command that I can use dsolve with method=implicit I could not find that in help?

thanks

restart:
with(LinearAlgebra):
A:=RandomMatrix(3,2, generator=1..3);

                               [1   1]
                               [       ]

> A:=Matrix([[1,2,2,3],[5,1,0,4],[6,7,3,4]]);
> V:=<6,5,9>;
                            

I want to add vector V as a new column [e.g. 3rd column] in matrix A, is there any function to do that simply? What abt to add as a row?

Hi,

I've been having problems trying to get Maple to multiply matrices together inside of a for loop (well, 3 actually).  In fact it sometimes has the same problem outside of the list, but not always.  I've included the file below: it's a cut down version of the normal page, but it gives the same error.  Note that Maple is fine for multiplying matrices together in the first few cases (defining M, M2, N1, N2), but it breaks down on L - despite the fact that it can do the very same calculation at the bottom of the page without problem.

Hi!

I have the follwing problem. I have the matrix

B C F G 7    8    9  
0  1 2 3 21 22  23

And each input of the 1st line should result in the 2nd line. E.g. Input B, should result Output  0 or Input 8 should result 22. I mean the analog function in Excel: vlookup

Is that possible?

Thank you!

Johann

Good Evening,

Would anybody please tell me what I'm doing wrong in the attached Maple worksheet. My first problem is to sum a vector and divide by the nops(x) to determine the CG of a pile group.

My second problem is a For loop with units at the bottom of the page. Please Help.

Regards,

Moses

It took me a couple of days just to write the below Maplet code which loads a CSV file (time series organized in

columns where the first column is date/year etc and first row contain the names of the stocks)

and displays the stock names in a dropdownbox. Now I want to plot my selection from my dropdownbox

but now I have a new problem. When I include the "onchange = AC"

command in the drop1 command line in order to update my selection from the dropdownBox

I get an error message :

HI all,

Thanks in advance for having a look at this topic.

I have problems with finding the inverse function for this equation

(10088-10088*exp(-x))/(72*x+76)/((1-exp(-x))/x+10088/3/(72*x+76)-1)

A solution exists for the range that I am interested in x>0.5  However I can not get an output for the inverse function even when assuming x>1

I am not very experienced in Maple so perhaps I am doing a small thing wrong. Any help on this would be highly appreciated!

I want to retrieve data from google finance to do some analysis. Since the amount of data pieces are very huge. To aviod a huge amount of copy and past operations, I need to do it automatically in maple. So my question is how can I reduce the work in Maple as much as possible? I know google offers some APIs for retrieving data. Can I utilize that in Maple?

I want to get the length of a list. Is there any command available for that? For example, I want it return 2 for the list [8374, 32875], since it has two items.

I type in:

--------------------------------------------------------------------

RET := λbar*R :

RET[Sigma] := cos(RET)+RET*sin(RET):

C6[Sigma]+(C3[Sigma]*RET[Sigma])^2/(4*De);

--------------------------------------------------------------------

It displays fine on my GUI, but when I copy and paste it into a text editor I get:

RET := λbar*R :

RET[Sigma] := cos(RET)+RET*sin(RET):

C6[Sigma]+(C*3[Sigma]*RE*T[Sigma])^2/(4*De);

--------------------------------------------------------------------