Hi everyone, I need help with solving my integrals Please see attached file Download 7055_integrals.pdf
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Consider the following four-dimensional matrix of four-dimensional matrices (they are the generators of the vector representation of the Lorentz group):

metric := Matrix(4,4,Vector([-1,1,1,1]),shape=diagonal):
generators := Matrix(4,4,
	(a,b) -> metric . Matrix(4,4,
	(c,d) -> metric[a,c]*metric[b,d] - metric[b,c]*metric[a,d])
);

The expression is antisymmetric in the indices a and b, i.e., the (outer) matrix is antisymmetric. So, to optimize my code (especially important, I suppose, when going to higher spacetime dimensions) I thought I would try adding the option shape=antisymmetric:

Right now (noon, Friday, 14 December) all 10 items in the Recent Comments are related to one forum, all within the last hour. I think this is the first time I have seen this. While a number of these comments are my own, I think this points out a problem others have made in the past. During active times, many comments get cycled out of Recent Comments before they are seen by regular readers. I would like to see this list given more space. Could it be expanded to keep all comments made in the past 6 hours (or the last 10 comments during slow periods). Maybe Active Forum Topics could be expanded a little, too. It would also be helpful to know how many posts are in a particular discussion and when the last comment was made. This information is available in other parts of MaplePrimes, can it be presented in a more concise form on the main page?

a bus travels 200 km at a constant speed. a car travelling 10 km/h faster than the bus, completes the same distance in 1 hour less than the bus. (1) how many hours does the bus take to travel the 200 km? (2) what is the speed of the car?

I am trying to use the EllipticE and EllipticF functions in an expression. The proper function call is EllipticE(z, k) where z = algebraic expression (the sine of the amplitude) k = algebraic expression (the parameter) I get exact agreement for 0 <>< value="" value=""><><>

I have a very long Equation and I need to simplifying it, I don't know how to use Maple is it possible one helps me how to do it? or simplifying it for me. Can Maple do it and how it will looks like?? my equation is d/h = ((((T / SK) + (T * -0.390527)) / (((T + -0.421559) * (SK + (SK + ((SK / (SK + (((T * -0.39954) + (SK + (T / SK))) + SK))) + SK)))) / T)) * -0.376824) If one can help to restructure it and give a simple one from two parts only, it will be so nice

This isn't specifically Maple-related; but mathematics-related; related to Linear Algebra and Modern Algebra. While reviewing Linear Algebra; I ran across the concept of "Similar Matrices"; which are defined as: if A,B are nxn matrices and there exists invertible nxn matrix P such that P^(-1)*A*P = B then A is similar to B The payoff was: if A, B are similar then they "have the same eigenvalues" (the characteristic equation is same for both A and B). (Here we are talking about the group of invertible nxn matrices, with operation matrix multiplication) --

The command "latex(expression)" attempts to generate LaTeX commands that will recreate the expression in LaTeX. For example; latex(%) will try to generate LaTeX commands to recreate the last output from Maple. Let's say I had just entered the Maple command to display an integral; for example: Int(Int(Int(rho^2*sin(phi),rho=sec(phi)..5*sec(phi)),phi=Pi/6..Pi/3),theta=0..2*Pi); If I would like to put that same integral in a LaTeX document; I could enter the following command: latex(%); Which, in Maple 9, returned: \int _{0}^{2\,\pi }\!\int _{1/6\,\pi }^{1/3\,\pi }\!\int _{\sec

Why not put the entire Maple help-system online? I mean, as html. No served .mw or plugins. No huge .pdf downloads. Just the goods, one page per routine, that load and render fast for every half-decent browser. No registration and login would be nice too. Consider the competition's sites, here and here. Wouldn't that be another...

There's an interesting set of posts on comp.soft-sys.math.maple about post-processing .eps plot output from Maple. Here's a link via Google Groups. The author's ideas revolve mostly about processing tickmarks and subtickmarks and replacing them with symbols. The claim is made that it's harder (or impossible) to do some things in Maple for .eps output that are possible in Mathematica or Matlab. I haven't yet tried or looked hard at the posted code, or verified the claim.

I'm a relatively new user of Maple, and I use it to teach high school mathematics. I've noticed that when Maple expands an expression like (x+y+z)^6, the terms come out in a different order each time the operation is done. If 6 students do it on 6 computers we get 6 different orderings. Is there an explanation for why Maple's algorithm does this that would be potentially comprehensible to my students (they are quite curious)?

When I use the GUI to produce the graph of y = 5x^2/(1+x^2), the graph is cut off in the exported .eps. Precisely, Type In: 5x^2/(1+x^2) , Right click- plots-2D plot, then Right-Click on graph, export as .eps. Open the resulting .eps file and the graph is truncated at around x=3. ?(Exporting as .gif or .jpeg seems to work here). However, plot( 5x^2/(1+x^2), x=-10..10) produces the correct result upon .eps exportation I thought this might have with smartplot vs. plot, but 2D plots constructed with plot builder are truncated as well.

It seems to me that I found a tip (I am a beginning user) In running these three commands in Maple 10, one gets: > sum(1/(n^4+1), n = -infinity .. infinity) sum(1/(n^4+1), n = -infinity .. infinity) > sum(1/(n^4+1), n = 0 .. infinity) 1/4*(Sum(_alpha*Psi(-_alpha), _alpha = RootOf(_Z^4+1))) > sum(1/(n^4+1), n = -infinity .. infinity) 0 The last answer is obviously wrong. In other similar experiments, Maple gives the answer -infinity to the last expression, which is also wrong. Could somebody comment on this phenomenon? Many thanks in advance.

Just wondering... what's wrong with the following command? > plot( cot(x), x=-Pi..Pi, view=[-Pi..Pi,-3..3] ); -- Regards, Franky.

i need to solve a set of linear equations of size 7000x7000 using 128 digits, the system is sparsed. which of the "options" in LinearAlgebra[LinearSolve) is the the most efficient? is there more efficient builtin procedure for such computations? thank's