I have two figures that's generated in Maple (by plot), then pasted them to a worksheet, which I would like to export them to PDF format with exactly the same as it seems on Maple, meaning that these two figures need to be on the same row.

However, in the exported PDF, these two figures are always in two rows: see Fig_1.mw and Fig_1.pdf 

What I tried was: to really resize these two figures into very small size, and the export works, however, I also need three figures or four figures in one row. See Fig_2.mw and Fig_2.pdf

So there is actually two questions:

1. Can I specify some parameters in Maple such that the exported PDF is exactly 'what I see is what I get'?

2. If #1 is impossible, where can I get the information on: width of the exported PDF, how to specify the precise size of plot command etc

Thanks,

does anybody know how to copy a rtable structure in a worksheet and paste it on the other worksheet?

I copy it by right click and paste on the other one but no data transfered.

How to express a chemistry equation in prefix expression

I have noticed this a couple of times now. If I  do a Saveas on a workbook document A to a new name B. Close maple. Reopen and load the new workbook document B it retains the old file name in the header bar and at the top of the workbook document list. The new filename is shown across the dark part at the top along with the old file name. The only fix I found the last time was to export the workbook as  B.mw, then saveas to B.maple and reattach documents. Painful.

Hi everyone!

I would really appreciate if someone could give me a hand on telling me what is wrong with this problem! pdsolve gives the error: Error, (in pdsolve/sys/info) found functions with same name but depending on different arguments in the given DE system: {f(0, y), f(x, 0), f(x, y), (D[2](f))(0, y), (D[2](f))(x, 0)}.


Thanks in advance!!! 

Hello,

I want to check via Maple whether the term is always bigger than c/4 (it is), but using verify(TERM, c/4, greater_than) just returns FALSE. I did assume(a > 0, b > 0, -1 <= c and c <= 1); It would be nice if you could tell me what exactly is causing the problem and how to solve it.

Thanks in advance

(9*a^3*b^3*c^2+4*a^6*c+16*a^5*b*c+47*a^4*b^2*c+82*a^3*b^3*c+47*a^2*b^4*c+16*a*b^5*c+4*b^6*c+16*a^5*b+80*a^4*b^2+132*a^3*b^3+80*a^2*b^4+16*a*b^5)*(a+2*b)^2*(a+b)^2*(2*a+b)^2/((4*a^6+28*a^5*b+77*a^4*b^2+106*a^3*b^3+77*a^2*b^4+28*a*b^5+4*b^6)*sqrt(-9*a^2*b^2*c^2+32*a^3*b*c+62*a^2*b^2*c+32*a*b^3*c+16*a^4+80*a^3*b+132*a^2*b^2+80*a*b^3+16*b^4)*sqrt(-9*a^4*b^4*c^2+24*a^6*b^2*c+28*a^5*b^3*c-14*a^4*b^4*c+28*a^3*b^5*c+24*a^2*b^6*c+16*a^8+112*a^7*b+276*a^6*b^2+296*a^5*b^3+220*a^4*b^4+296*a^3*b^5+276*a^2*b^6+112*a*b^7+16*b^8))

Here, I have a 3D map T=(T1,T2,T3) with

T1(x1,x2,x3)=x1*exp(6-2*x1-x2-0.3*x3),

T2(x1,x2,x3)=x2*exp(5-2*x1-2*x2-*x3),

T3(x1,x2,x3)=x3*exp(8-0.2*x1-x2-x3),

How can I use  IterativeMaps:-Attractor obtain the attractor for T.

Maple ended up corrupting all my files.

I did

data:=ImportMatrix("foo.txt", source=csv);
ExportMatrix("foo.txt",data,target=csv);

Expecting the same file not to change.  But on input the file was like this

1,2,3,4,0.1,5,"int(x^2,x)","\frac{x^3}{3}",6,7,"(2*x + 1)^(3/2)/3","A"
1,2,3,4,0.1,5,"\cos(x)","\sin(x)",6,7,"(2*x + 1)^(3/2)/3","A"

After ExportMatrix the file because like this

1,2,3,4,.1,5,"int(x^2,x)","\\frac{x^3}{3}",6,7,"(2*x + 1)^(3/2)/3","A"
1,2,3,4,.1,5,"\\cos(x)","\\sin(x)",6,7,"(2*x + 1)^(3/2)/3","A"

It added an extra "\" each time it saw "\" in the string. I did not want it to do this. This ended up corrupting all my Latex code, which means I have to recreate all the files now. (did not notice this first time I tested it). So each time I run this code, this file becomes

1,2,3,4,.1,5,"int(x^2,x)","\\\\\\\\\frac{x^3}{3}",6,7,"(2*x + 1)^(3/2)/3","A"
1,2,3,4,.1,5,"\\\\\\\\cos(x)","\\\\\\\\\sin(x)",6,7,"(2*x + 1)^(3/2)/3","A"

and so on.

I looked at all options, and so far, not able to see option to tell it not to do this. With so many options I am not sure what to try now.

Any one knows how to tell ExportMatrix not to add "\" ?  Maple 2016.2

I simply wanted to read the file, and make one change in field, and write the file back to same format it was.

After 3 hrs trying I give up.  I am a Maple newbie.

I need to read a plain text file, where each line contains 12 fields in it.

The fields are comma separated.  But some of the fields are quoted strings. Here is an example of one line below. I can read the line OK, as a string, using readline(), but I do not know how to split it correctly into 12 fields inside Maple once read, so I can access each field easily and make any changes I want.

The problem is that, once I read the line using readline(), it comes in as string. But it has string embeded in it allready, since the line in the file, allready has quoted string as fields.

Here is one line in file foo.txt

1,2,3,4,0.1,5,"int(x^2,x)","\frac{x^3}{3}",6,7,"(2*x + 1)^(3/2)/3","A"

Each line has the same number of fields. 12.  Now I do this:

current_line:=readline("foo.txt");

And now current_line is

"1,2,3,4,0.1,5,"int(x^2,x)","\frac{x^3}{3}",6,7,"(2*x + 1)^(3/2)/3","A""

And here I am stuck. I tried StringTools[Split], I tried sscanf, tried readata, and nothing worked. For example, if I do

sscanf(current_line,"%d,%d,%d,%d,%f,%d,%s,%s,%d,%d,%s,%s");

The result is

[1, 2, 3, 4, .1, 5, ""int(x^2,x)","\frac{x^3}{3}",6,7,"(2*x"]

The fields are

[integer,integer,integer,integer,float,integer,string,string,integer,integer,string,string]

The problem is the embeded string. I am sure there is a Maple function to do this easily, I just can't find it.

What is the correct way to read these lines, and split them into a Matlab list (of lists) so I can access them easily inside Maple?

Using Maple 2016.2

I tryed this, because i thought i might be abel to shade this new piecewise function later on, but i dont know how to tell maple that there is 2 y-axes values in the interval from (2;3):

so it failed. 

pleace help regards Niklas.

The commands below are from a response by Carl Love to a question posed on February 27, 2016.

Variable t is not mentioned in the plot of f. Does t assume one or more particular values in the construction of the plot?

When t is given a specific value before executing the plot command, the resulting plot appears to be independent of t's value.

What is the logic behind the plot's construction?

f:= cos(2*t/m) + cos(2*(t+5)/m):
plot('maximize'(f), m= 1..10);

Hi

I have a nonlinear PDEs, solved using finite difference in the square

I get the following nonlinear system of equation. Is there any idea how correct the code and display the solution.

I will appreciate any help in this question.

restart;
n:=100;
h:=1/(n+1);

# Boundary condition

for j from 0 by 1  to n+1 do
u[0, j] = 0;
u[n+1, j] = 0;
u[j, 0] = 0;
u[j, n+1] = 0 ;
end do;
## Loop for interior point in the square
for i from 1 by 1 to  n do
for j from 1 by 1 to  n do
(u[i+1, j]-u[i, j])*(u[i+1, j]-2*u[i, j]+u[i-1, j])+h*(u[i, j+1]-2*u[i, j]+u[i, j-1]) = 0;
end do;
end do;
 

How can I solve this system of equations with unknown u[i,j], where i,j=1,..,n

Many thanks for any help

Generate 8 random 3 by 3 matrices using the RandomMatrix command from the  LinearAlgebra package. As each matrix is generated use Eigenvalues to compute its eigenvalues. Then take the product of the eigenvalues, and check that for each matrix, this product is equal to the determinant of the matrix.  
 

Hi!

I have a question here. Is there any way to simplify a complicated number expressed in terms of RootOf() forms?

I got numbers like

c:=(3/128)*RootOf(3*_Z^4-20*_Z^3+50*_Z^2-20*_Z+3)^3-(5/32)*RootOf(3*_Z^4-20*_Z^3+50*_Z^2-20*_Z+3)^2+(1/64)*sqrt(4+6*sqrt(6))+(25/64)*RootOf(3*_Z^4-20*_Z^3+50*_Z^2-20*_Z+3)-(3/128)*RootOf(3+3*_Z^2+(-3*RootOf(3*_Z^4-20*_Z^3+50*_Z^2-20*_Z+3)^3+20*RootOf(3*_Z^4-20*_Z^3+50*_Z^2-20*_Z+3)^2-47*RootOf(3*_Z^4-20*_Z^3+50*_Z^2-20*_Z+3))*_Z)-5/64

I am quite sure this number is 0: 
evalf(c, 100) gives:
0.+1.*10^(-101)*I

However, I tried simplify(c) and convert( c, 'radical' ) and some other choices of simplify() function. None of them can output 0. Is there any maple functions that can help me to simplify this kind of expressions?

Thanks!

William

Hi, I wondered if anyone knows a way to separate out addition (or subtraction) terms in an equation.

For example given eqn1:

eqn1:= (1/2)*p+1+(-4*p^2-p-1)/(3*p^3+7*p^2+2*p+2)

I would like to get the first rational term before the first plus (or minus) sign. In this case it would be (p/2).

This is a trivial example shown above but the real value in this is that I want to customize my own factorizations using the pratial fraction function of Maple. In this case I would not know eqn1 before hand but it would be the solution to some previous factorization and I need just the first term (before the first plus sign).

If anyone knows any tips or tricks that will set me on the right path to doing this it is most appreciated.