This is the coding till i do dhe decryption process. 

Do(plaintext=GetProperty("message",value));
Do(plaintext=convert(GetProperty("message",value),name));
Do(plaintextInt = convert(plaintext, bytes));
Do(plaintextBin = `~`[convert](plaintextInt, binary));
Do(plaintextBin2 = map2(nprintf, "%07d", plaintextBin));
Do(n0 = plaintextBin2[]);
Do(length1 = length(n0));
Do(plaintextCode = cat("", plaintextBin2[]));
Do(length2 = length(plaintextCode));
Do(z = convert(plaintextCode, decimal, binary));
Do(z1 = z+1);
Do(z2 = z1+%sk1);
Do(z3 = convert(z2, base, 2));
Do(b = cat("", z3[]));
Do(z4 = length(b));
Do(z5 = [Bits:-GetBits(-z2, -1 .. 0, bits = z4)]);
Do(z6 = cat("", z5[]));
Do(z7 = convert(z6, decimal, binary));
Do(%C = `mod`(Power(z7, %txte), %txtN));
Do(%C1 = `mod`(Power(%sk1, %txte), %txtN));

Do(%m = `mod`(Power(%C, %d), %N));

Do(%sk2=`mod`(Power(%C1,%d),%N));

Then nw i need to decrypt back to the original message with the coding:

Do(z8 = [Bits:-GetBits(-%m,-1 .. 0, bits = z4)]);
Do(c = cat("", z8[]));
Do(z9 = convert(c, decimal, binary));
Do(z10 = z9-sk2);
Do(z11 = z10-1);
Do(z12 = [Bits:-GetBits(z11, -1 .. 0, bits = length2)]);
Do(d = cat("", z12[]));
Do(plaintextBin2 = [StringTools:-LengthSplit(d, length1)]);
Do(plaintextInt2 = `~`[convert](plaintextBin2, decimal, binary));
Do(%message1 = convert(plaintextInt, bytes));

when i execute the program it shows the error

so how should I solve this as although i think that it should be problem of parsing the number z4 in the sentence that i highlighed, but whenever i correct it it still can't work.Thus anyone who know please help.Thanks.

How can I use a matrix in timeseriesanalysis?

m3 := Import("d:\\bok6.xlsx")

Areachart works fine:

AreaChart([m3], color = "pink" .. "niagara Navy", title = "Tidslinje Tilluft og avtrekk")

But when matrix m3 is entered in timeseriesanalysis it gives a error:

ts1 := TimeSeries([m3], startdate = "2016-08-1", header = "Tilluft VAV setpunkt", enddate = "2016-08-01");

Error, (in TimeSeriesAnalysis:-TimeSeries) invalid input: too many and/or wrong type of arguments passed to TimeSeries:-ModuleCopy; first unused argument is [Array(1..4, 1..1, {(1, 1) = 155.0, (2, 1) = 142.0, (3, 1) = 133.0, (4, 1) = 122.0})]

I have loaded the following packages:

with*matrix  with*linearalgebra  with(plots)  with(Statistics)  with(TimeSeriesAnalysis)

Regards

Kristian

Maple tech support sent me a third party application for my Maple 2016 to solve a problem that I'm working on. I was instructed to copy and paste a few items from the download: "to your "<maple>/lib" folder" Unfortunately I cannot access "lib" in my Maple "Applications" folder on my OS X MacBook Pro.

This is what Maple Tech Support sent me:

"Another option you may want to look into is the "DirectSearch" package (which is third-party, and not supported by us), which would need to be downloaded from the Maplesoft Application Centre:

                http://www.maplesoft.com/applications/view.aspx?SID=101333

There is a function "GlobalOptima()", which allows one to search for a global minimum to the objective function, as opposed to a local minimum like commands such as "LSSolve()". To install, you can extract the files "DirectSearch.mla", "DirectSearch.help", and "DirectSearch.hdb" to your "<maple>/lib" folder."

Any suggestions?

I need to do Huffman Coding by using Document Tools thus i can produce user interface by using coding that referred in this post by Alec Mihailovs. Below is the coding and Document Tools interface:

Do(plaintext=GetProperty("message2",value));
Do(plaintext=convert(GetProperty("message2",value),name));
Do(Freq = proc (message) options operator, arrow; map(proc (x) options operator, arrow; rhs(x) = lhs(x) end proc, {StringTools:-CharacterFrequencies(message)}) end proc);
Do(Fr = Freq(plaintext));
Do(HuffmanTree = proc (message) options operator, arrow; if nops(message) <= 1 then rhs(message[]) else procname(`union`(message[3 .. -1], {lhs(message[1])+lhs(message[2]) = [rhs(message[1]), rhs(message[2])]})) end if end proc);
Do(HT = HuffmanTree(Fr));
Do(HuffmanCoding = proc (message, r := "") if message::string then message = r else procname(message[1], cat(r, 0)), procname(message[2], cat(r, 1)) end if end proc);
Do(HD = HuffmanCoding(HT));
Do(C = table([HD]));
Do(HC = cat(map(proc (x) options operator, arrow; C[x] end proc, StringTools:-Explode(message))[])

It still can get result for first part of the coding.During execute the second part of the coding(as bolded), it produces error ,the error show below.So how should I modified so that the error won't pop out @Alec Mihaivols

When defining a plain standard distributed stochastic variable X, and can find the probability of X <= 0.6 using the Probability function, but how can I get the value for a certain probability, as is done with the fsolve function for example below.

However, the fsolve used to defined Prev above appears to be a bad way to do it, since the Prev function can't for example plot.

Is there some build in way of doing reverse of Probability for a stocastical variable ?

I want to plot a curve of the form |z*e^(1-z)| = 1 (the Szego curve). I am not sure how to call complexplot() to make this happen. Just calling complexplot(abs(z*exp(1-z)) = 1) does not work, and I don't know what else to specify. Any help?

restart:with(plots):
eq:=(diff(f(eta),eta$2))-a*f(eta)+b*(1+diff(f(eta),eta)^2)^(-1/2)=0;
bc:=f(1)=0,D(f)(0)=0;
ans := dsolve(eq);

Is there a way to see just the titles of, say, the last 100 questions?  Looking into recent questions I see the full post, so that requires moving up and down multiple pages. Really painful.

hi.how i can determind  eignvalue of matrix in the form parametric?

thanks1.mw

Download 1.mw

I need to create n-order tensor filled with any symbolic variable, for exemple 'x', but "symbol" option works only on vectors and matrix, so i don't know how to do that on n-order array.

X := Vector(3, symbol = x);#------ Work
Matrix(3, 3, symbol = x);#------ Work

Array(1 .. 3, 1 .. 3, 1 .. 3, symbol = x);
Error, argument `symbol = x` is incorrect or out of order

And 2nd problem thet globaly i need to create symmetric n-order tensor with symmitry for any pair of index and with contraction for any couple of indexes equal to zero. As i understend i need to create a big list of equations for every individual pair of index and 2 conditions (contraction and symmitry) and solve it to get a match and combination of independent index and paste values in them?

hi dear

i wright this formula for solving by two variable but it dont solve and i recicive this message (warning solutions may have been lost)

please help my

thanks

Doing the following:

Why is int used when defining F not evaluated to x^2/2 when used to defined function F as shown in (2), when the int is evaluated when used separately in (3)?

How do I filter a DataFrame using a value in a string column?
I have a CSV file containing records. Some columns are numbers, others are strings.
The examples in the tutorials are good for filtering on numbers but I can't see how to filter using a string.

ie I have 1300 records with ID, Name, Region, enrolments, ...
enrolments is a number and I can filter on that.
Region is a column of strings. I want to filter on that and work with all records from a specific region.

Thanks,
David Moss

I upgraded my OS from Ubuntu 14.04 to Ubuntu 16.04.

When attempting to start maple, I get

Licensing error:-9,57

What does this mean?

Dear all,

I am looking at the help page for reading json files, but it is too advanced for me to understand...

Can anyone give an easy example where a json file is read into a variable and printing the data structure?

Hugs,
Louise =)