Hello,

I'm having a problem evaluating an indefinite integral in MAPLE 14.  I am unfortunately unable to copy/paste the code in here, but the problem is relatively simple.

I have an expression as f(x,y) and am using the "expressions" (as opposed to "int" commands) to setup up the dbl integral.  When I run the code, it is only integrating with respect to one variable.  The answer is returned as the f(x,y) integrated...

Hi:  I need to reinstall my student copy of Maple after switching to a new computer.  How can I reactivate?  The Maple folks don't seem to answer support emails.  I seem to recall there's a secret link or trick way to ask them to reset their activation records server?  My old hard drive crashed and now I'm stuck.  Help!   Patti

I have a list c:= [1,2] and i would like to add a new element to this list so that the result is c:=[1,2,3], how would this be done?

And if this can be done is there a way to specify where in the list the element is added to?

Thanks in advance for any help. 

I have a list X:=[seq(i, i=1..8)] i.e. X:=[1,2,3,4,5,6,7,8]

Say I have a separate list containing for example t:=[2,5,6]. How do I remove these from my original list leaving me with X:=[1,3,4,7,8].

I have been trying subsop(t=NULL,X); however I only get the error message "Error, invalid input: subsop received (1, 2, 3) = (), which is not valid for its 1st argument"

I have 2 queestions:

1- concerned about the title font format:

fot the title

tit:=sprintf("W=%g,D=%g,f=%g,M=%g,N=%g,q=%a",Omega,Delta,phi,M,N,q);
                        "W=0.2,D=0,f=0,M=0,N=0,q=-10"

the little problem in the last value q=-10 it appear theta=10 even the sign (-) invisible

2- the sign(-) at the tickmars...

I use SOLVE command

>solu=solve({x+y=a, x-y=b}, {x, y});

solu = {x = (1/2)*b+(1/2)*a, y = -(1/2)*b+(1/2)*a}

>solu[1];
solu[1]

(which shows the solution value for x is not solu[1]).

I would like to use the values of x and y in SOLU to continue with some symbolic computation.

How do I recover -FROM SOLU- the values of X and Y (solutions)?

Thanks in advance,

Jean-Jacques

I have a vector column XbIndets := (6,7,8) and I would like to gain the 3rd element of this i.e 8. I know it is possible using row function when using a matrix but am unsure how this is done when using a vector. 

Any help is much appreciated

Error_redirect_pa.mw  i got the problem to get repeated value of unknown parameter ''ALPHA"" using pade approximation in maple. i uploted my worksheet kind watch out my problem. and give some suggessions...Error_redirect_pa.mw 

I've seen people using different approaches to choosing random numbers.  Some people favour certain methods over others. 

One example using Sample(RandomVariable(Normal(0,1)),50) used in the random walks application.  What about using something like seq(rand(-1000..1000)()/1000,i=1..50) ?  Do they both achieve the same sense of randomness?

been struggling on this question for ages:

the questions is as follows is to be solved using maple:
http://www.villagephotos.com/utils/image.aspx?u=2006-11\1228676\piece.jpg
where alpha,beta , sigma are constants . investigate whether it is possible to choose alpha,beta and sigma as to ensure that f is real- valued, continuous and with first and second derivatives at x=0. Plot a graph of any resulthing continous functions f and it's derivatives, over ranger -1<=x <= 1....

Hi, this is what I did and got an error. 

with (plots):

col := ["Red", "Green", "Blue", "Orange", "Teal", "Azure", "BlueViolet", "Yellow", "DarkOliveGreen", "DarkRed"]

for i from 1 to 10 do z [i]:=implicitplot (x^((1/(3)))* (y(x)^(2)+ 5* y(x)) + 3 *(x^(2)+y(x)^(2))*sin(xy(x)),  i^(),x = -10...10,  y= -20...20, color = col[i], numpoints = 2000) od:
 

Error, illegal use of an object as a name    ...

hello ,

I have figured out how to solve for corresponding values but when i try to solve the set of equations by using for example,

a :=[10 values]

b:=[10 values]

w:= [10 values]

##here i want to solve the set of equations for  [a1 b1 w1] ,[a2 b2 w1] , [a3 b3 w1]....like i want to solve the equations for all correponding values of a,b @ each w ##

set of equations (function of a,b,c)

i cant make it work...

I am trying to assign a new value to variable. ie: replace the value of the matrix A by the matrix B.
However, when I try to use the 'new' Matrix A, it doesn't seem to be the value that I expect...

I have two vectors ( A=(1,2,3,4,5,6,7,8), B=(2,7,8) ) and I would like to compare them to see if the elements in B are also in A, and then if they are I would like to remove them from A so I would be left with the following A=(1,3,4,5,6). Is this possible and if so how?

Any help is much appreciated

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