## Indices question...

I use indices of Table

6,6,3,3,3

but it return 3,6

how to keep [3,3,3,6,6]?

any other method for indices?

any non hash table which map value to value?

## Sum of functions...

It is necessary that the expressions are combined in a new function. So as I'm trying not is obtained.

 >
 (1)
 >

## Discontinuities even with "discont=true"?...

Hello everyone,

Even using the command "discont=true", some of the functions I plot still present discontinuities, but some of them do not present.

How can I fix this? This one file ilustrates perfectly the problem.

file_discont.mw

## Build a 3d graph of the matrix...

I have a similar matrix.

Build through matrixplot, not exactly what I need to get. I need a way to plot without zero values on the graph.

## How to plot multiple functions in one plot?...

I want to plot all three "roots" of the polynom I called 'H[i]' for different values of 'V', in the interval k=0.0..1.0, all in the same plot.

How can I do it, both for real and imaginary parts of H[i]?

file1.mw

## can anyone explain this?...

the function rationalize simplify rational expression that contains complicated expression but in this example it doesn't work

rationalize(1/sqrt(x))

1/sqrt(x)

it gives to me the same expression why ?

## how to find back the system which solution is maxw...

how to find back the system which solution is maxwell equations?

as maxwell equations is an invariant,

if solution is maxwell which is invariant, how to find back the system which solve it, the solution is maxwell?

will there a multiple systems which solution is maxwell equations?

if can not find, how to enumerate all combinations of systems to search maxwell equations?

## what is the meaning of this result ?...

can anyone explain to me the  meaning of this result ?trial.mw

## How to select one specific element from 'allvalues...

Hello guys, I'm a new user of Maple and I'd love some help.

I'm trying to solve a cubic equation with four variables, and plot the imaginary part of 'w' as a function of 'x' for different values of 'y' and 'z'. When I ask for all the equation roots, the result is huge.

I want to know if there's an "easier" way to select each root of the equation and make it a function without having to "select element" and copy/paste, because I've tried this way and it's not working.

I know this is a stupid question, but I could really use some help.

## How to solve a large number of linear equations in...

I am trying to solve a linear system involving large number of equations with constant coefficients using Solve command from the LinearAlgebra package. The maple program is giving solutions for a smaller number of equations (T=10,Ne=20,Ng=15). But if I increase the number of equations to (T=20,Ne=30, Ng=25), then I got the error kernel connection has been lost. I need to increase the number of equations beyond this also. Any help to simplify the code or finding errors is appreciated.

solntosystem.mw

## can maple do a real time update graph by for loop ...

can maple do a real time update graph by for loop read file data?

i can only think that use for loop and read file and draw a sequence of graph,

but memory will be accumulated to consume

just want to make a dashboard to display a multiple of graphs

## can maple graph do "point to graph" to create feat...

would like to point to graph then it highlight graph with virtical line

and mark 1 in one of row in one of column in table like data

just like define feature manually for machine learning but using graph

## how to get this decimal numbers?...

0.733333e^-1

0.733333e^-3

0.733333e^-5

0.733333e^-7

no matter what e is , expect to output the same 0.733333

## how to output all chains with list of list?...

chosen1 := [[1,2],[1,20],[3,4]]:
chosen2 := [[2,3],[20,3],[3,4]]:
chosen3 := [[3,4],[5,7]]:
chosen4 := [[4,5],[5,6]]:
chosen5 := [[5,6],[7,9]]:

hashtable can not work

for example
[1,2]'s 2 as key to find 3 in chosen2 [2,3] then use 3 to find 4 in [3,4] then use 4 to find 5 in [4,5]