Does anybody know how can I plot 3D chart with gridlines for Axes style set to boxed? and the second question: How can I plot 3D chart with 3D bars?

This problem (problem # 30) from Goldstein's "Classical Mechanics" specifically asks one to use Maple. The problem is as follows. Using Maple or Mathematica or a similar program calculate the Einstein field equations for spherical coordinates assuming T[mu,nu] = 0 everywhere except possibly for r = 0, where the coordinate system is undefined. The most general spherical static metric corresponds to an interval given by (ds)^2 =e^(nu(r))*(c^2)*(dt)^2 - e^(lambda(r))*(dr^2) - r^2*((dtheta^2) + sin^2(theta)*(dphi^2)), where r, theta, and phi correspond to the usual three-dimensional spherical coordinates.

Hi everyone, I am a new member of your group. I have a problem about matrix conversion from Matlab to Maple. In Matlab 7.0 i have created a program,this program sends a result matrix namely AT.This matrix is not symbolic, it is totally numeric. I would like to see this matrix inside of Maple 10. So far i could not make it. I would be grateful if you could help me. Greetings.

Hello everyone I have a question about the use of ExportMatrix and ExportVector. I am currently working on a sheet, where a matrix is changed within a loop. At the end of each cycle of the loop, the eigenvalues of the matrix are calculated and given out in form of a vector. How can I export these eigenvalue-vectors to a textfile together with the index of the loop? I already tried to use ExportVector at the end of each cycle, but the command overwrites entries of previous cycles, so that only the very last eigenvalue-vector is noted. Thank you very much for any help.

Hi, I want to know if there is a function or simple way that retrieves the constant of an equation? e.g eq=2x^2+4y-6 the constant here is -6

ex how do i command # 1 3x+2y+z=2 # 2 4x+2y+2z=8 # 3 x-y+z=4 i can do the math. (3*#3)+ #1=-5y+2z=10 (4*#3) +#2=6y-2z=-8 add both together y=2 sub in one equation above 6y-2z=-8 z=10 sub into x-y+z=4 x=-4 set this up in maple for me

Simplest example I can think of. I want to define f(x) to be the absolute value function (yes, of course, without using the built-in Maple absolute value function) f:=x->x; is great for defining a function. I've used that many times to define n-vector-valued functions of m variables. But how do I do f:=x->x if x>0 f:=x->-x if x

I'm considering to buy an Asus Eee Pc 4G, but before I'd like to know if Maple 11 can smoothly run on it (at least with classic interface). Is there somebody who has tried it? Thank you!

Hi, I have a modeling equation and a set of data points, and I want to compute the accuracy of my equation relative to the data points. Is there anyway to compute the R squared value of my equation relative to these data points? All of the commands I can find in Statistics are used to fit an equation to the data points, which I don't want to do, I just want to have a qualitative measurement of how accurate my equation is.

How is it possible that the following program works correctly: printlevel:=2: for n from 1 to 10 do if (0=0 mod 5) then 0; end if; end do; It correctly outputs ten 0's. But, when I change 0 to n inside the if conditional printlevel:=2: for n from 1 to 10 do if (n=0 mod 5) then 0; end if; end do; I get nothing for output. I should get two 0's. n is 0 mod 5 exactly twice as n runs from 1 through 10. I have experimented with adding spaces and deleting spaces between keywords and parentheses and numerical values to test if that was the problem. Nothing works.

Dear Sir/Madam, I have written a small program to calculation a kind of integration. This integral depends on the values of another function which is given numerically. I want to calculate numerical results of this integral. But the I just have sucu result as "Float (Undefined)" . Please help me to find where is wrong. Thank you very much! Download 7745_Float undefined.mws
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In this Maple 10 classic worksheet I'm trying to get the eigenvalues of the matrix H, which are dependent of the parameter F>=0. Please help me to get rid of those RootOf's. The result may be numeric because I only need it for plotting. Download 5085_20_H.mws
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Hi Guys i have 2 matrices, A and B, a[i,j] and b[i,j] are the elements of the matrices respectively. How can i set the entries of A to equal the entrices of B, so then when i use the command, evalm(A), the previous a[i,j] values will become b[i,j]? Thanks.

for n from 1 to 2 do if(isprime(L[n]) then 7 else 9; end if; end do; No matter combination of semicolons or colons I put at the end of each line or omit, I cannot get this little test routine not to spit back "unable to match delimiters" error message. L := [4, 5]; P1 := [-8, 9]; if (5 > 6) then P1[1] else L[2]; end if; Ironically, this routine worked. I do not see the difference.

The equation y'= ((2-t)(2-y))/y , y(0)=1 How do I use Euler's method to calculate an approximation to y(1) using step size i. h=0.2 ii. h=0.1 iii. 0.05