Dear Maple users

I have a question which is maybe easily solved, but I cannot seem to find the solution myself. A vector X of coefficients has been computed earlier in the Maple document and I want these coefficients placed in front of some written symbols in order to make Maple display the final result in a nice way. I made an attempt with the Vector command as shown in the image, but I cannot make the indices start at -2. In addition I want some written math placed in front of the expression. In fact I want it displayed like shown on the image marked with a red rectangle. I did write this manually, but want Maple to do it automatically when given the coefficients vector calculated earlier. I hope someone can help me here!

(It is about finite difference methods, by the way)

Regards,

Erik 

Dear Maple users

My question is probably simple, but I can't seem to figure out how to do it in a smart way way without using procedures: My task is to create a cumulative list from a list. Ex: From [3,-2,5,1,10,7] I want to create the list [3,1,6,7,17,24]. Every entrance in the new list is the sum of the previous ones including the actual entrance. The Statistics package contain a command named CumulativeSum, but unfortunately a list is not returned ... I hope someone can help doing it is a simple way.

Regards,

Erik

The built-in Histogram command in the Statistics package only creates a Histogram from raw data, unfortunately. There is however a big number of situations, where you only have grouped data with intervals and their associated frequencies (probabilities) and want to plot the Histogram. Suppose that the intervals are of equal width and (indirectly) are specified from a starting point x0, a column-width named 'width' and the number of intervals given by n. Suppose the frequencies...

Dear Maple users

I have a question, which is probably very basic, but I can't find how to handle it in the Programming Manual or elsewhere. I need to declare a parameter, which is a vector of lists. Example of element:

< [3,7,2,4], [-3,6,8,0], [-5,8,4,2]>

Vector has n components and each list has k components. I tried declaring it like:

boxVector:=Vector(n,datatype=list());

and other ways, but it didn't work. How can it be done?...

Dear Maple users

I am looking for easy ways to manipulate lists. Especially I want to take a list of lists, say:

[[1,3], [5,8], [9,2], [5,12]]

and create a list of the second components:

[3,8,2,12]

Another problem: How do I collect every second element of a list, say:

[4,2,-1,9,5,6,2,0,14,7]

creating [2,9,6,0,7].

I can do it with loops, but I guess there is a smarter way to accomplish these tasks. I was looking...