Maple will multiply two matrices for me perfectly.
However, when I change the value in one of the cells and try to re-evaluate the product, Maple starts giving me the sum of something in all of my cells.
Are you simply not allowed to ever change the initial values you set for a matrix? This doesn't seem to make sense to me.
I have attached a screen shot to show an example with a random matrix.
I attach a file in which i get an error though it performs.
I made a for do statement which performs perfectly for one loop, but gives an error "unexpected ',' , though performs (i cld not find the errors!).
What does this error state then? How do i remove when I use semicolon to end statement? Can any one help me. Thanks.
This fails (the code computes the quotient group directly from the definition):
with(GroupTheory):
Qgr := (sgr, gr) -> CustomGroup(LeftCosets(sgr, gr),
`.` = ((a, b) -> LeftCoset(Representative(a) . Representative(b), sgr)),
`/` = ((a) -> LeftCoset(Representative(a)^(-1), sgr)),
`=` = ((a, b) -> Elements(a) = Elements(b)));
gr := QuaternionGroup();
Generators(gr);
[(1, 2, 3, 4)(5, 6, 8, 7), (1, 5, 3, 8)(2, 7, 4, 6)]
qgr := Qgr(Subgroup({Generators(gr)[1]^2}, gr), gr);
qgr := ` < a custom group with 4 generators > `
AreIsomorphic(qgr, DirectProduct(CyclicGroup(2), CyclicGroup(2)));
Error, (in =) invalid keyword expression
If I rename the parameters in the definition of Qgr, e.g., change the last line to
`=` = ((aa, bb) -> Elements(aa) = Elements(bb))
then everything works, AreIsomorphic gives true.
When I download the help document here
https://www.maplesoft.com/support/help/maple/view.aspx?path=int%2Fdetails
I get a bug when I execute the page.
I copied pasted the last line using 1d math notation to replicate the error.
There is no addition symbol between x^2 + O(x^5)
On the help page I don't see an error.
I uploaded the help file int-details_(2).mw
I am using the LinearAlgebra package to do dynamics between a rotating Cartesian coordinate system and a fixed Cartesian coordinate system. The VectorCalculus package is not what I need.
Since I can't seem to get my test worksheet to paste into this post, I will manually enter an "approximation" to it. I assume that the notation [x, y, z] represents a column vector. I also assume that x represents the cross product operator from the operator pallete.
I just want to get any one of the three ways of doing a vector cross product (see below) to simply display in math notation as R x V. What I get from the three methods below for an unevaluated cross product is "ugly".
Any help or advice will be greatly appreciated.
> restart
> with(LinearAlgebra):
> R := Vector(3, [x, y, z])
R := [x, y, z]
> V := Vector(3, [u, v, w])
V := [u, v, w]
>R x V
[-vz + wy, uz - wx, -uy + vx]
>'R x V'
Typesetting:-delayCrossProduct(R,V)
>CrossProduct(R, V)
[-vz + wy, uz - wx, -uy + vx]
>'CrossProduct(R,V)'
LinearAlgebra:-CrossProduct(R,V)
> R &x V
[-vz + wy, uz - wx, -uy + vx]
'R &x V'
LinearAlgebra:-&x(R,V)
Spawned from here. The code itself is perfectly fine, but if the definition of TD is in the same cell with the rest of the code, TD gives an error. The same definition in a separate cell works.
in maple 2017 I have enconterd a problem in showing of matrix elements. this error did not exist in maple 2016.
after some mathematical operations with(Linearalgebra)
I have obtained a matrix but maple shows it as below
`Vector(3, {(1) = \`+\`(\`*\`(0.19498673e10, \`*\`(\`^\`(x[1], 3))), \`-\`(\`*\`(0.36539123e10, \`*\`(\`^\`(x[1], 2), \`*\`(x[2])))), \`*\`(0.12514628e10, \`*\`(\`^\`(x[1], 2), \`*\`(x[3]))), \`-\`(\`*\`(7987.1506, \`*\`(\`^\`(x[1], 2)))), \`*\`(0.35170874e10, \`*\`(x[1], \`*\`(\`^\`(x[2], 2)))), \`-\`(\`*\`(0.41418339e10, \`*\`(x[1], \`*\`(x[2], \`*\`(x[3]))))), \`-\`(\`*\`(9187.8615, \`*\`(x[1], \`*\`(x[2])))), \`*\`(0.28788960e10, \`*\`(x[1], \`*\`(\`^\`(x[3], 2)))), \`*\`(2871.4325, \`*\`(x[1], \`*\`(x[3]))), \`-\`(\`*\`(0.95594712e9, \`*\`(\`^\`(x[2], 3)))), \`*\`(0.21616680e10, \`*\`(\`^\`(x[2], 2), \`*\`(x[3]))), \`-\`(\`*\`(16552.293, \`*\`(\`^\`(x[2], 2)))), \`-\`(\`*\`(0.20009067e10, \`*\`(x[2], \`*\`(\`^\`(x[3], 2))))), \`-\`(\`*\`(30447.582, \`*\`(x[2], \`*\`(x[3])))), \`*\`(0.42009564e9, \`*\`(\`^\`(x[3], 3))), \`-\`(\`*\`(42372.407, \`*\`(\`^\`(x[3], 2))))), (2) = \`+\`(\`-\`(\`*\`(0.14713991e11, \`*\`(\`^\`(x[1], 3)))), \`*\`(0.42489026e11, \`*\`(\`^\`(x[1], 2), \`*\`(x[2]))), \`-\`(\`*\`(0.25018214e11, \`*\`(\`^\`(x[1], 2), \`*\`(x[3])))), \`-\`(\`*\`(55498.093, \`*\`(\`^\`(x[1], 2)))), \`-\`(\`*\`(0.34645652e11, \`*\`(x[1], \`*\`(\`^\`(x[2], 2))))), \`*\`(0.52229109e11, \`*\`(x[1], \`*\`(x[2], \`*\`(x[3])))), \`-\`(\`*\`(399927.96, \`*\`(x[1], \`*\`(x[2])))), \`-\`(\`*\`(0.24172439e11, \`*\`(x[1], \`*\`(\`^\`(x[3], 2))))), \`-\`(\`*\`(367829.40, \`*\`(x[1], \`*\`(x[3])))), \`*\`(0.11603445e11, \`*\`(\`^\`(x[2], 3))), \`-\`(\`*\`(0.24618238e11, \`*\`(\`^\`(x[2], 2), \`*\`(x[3])))), \`*\`(163169.71, \`*\`(\`^\`(x[2], 2))), \`*\`(0.24814370e11, \`*\`(x[2], \`*\`(\`^\`(x[3], 2)))), \`-\`(\`*\`(711030.81, \`*\`(x[2], \`*\`(x[3])))), \`-\`(\`*\`(0.64758011e10, \`*\`(\`^\`(x[3], 3)))), \`*\`(427083.52, \`*\`(\`^\`(x[3], 2)))), (3) = \`+\`(\`*\`(0.13627334e11, \`*\`(\`^\`(x[1], 3))), \`-\`(\`*\`(0.67651416e11, \`*\`(\`^\`(x[1], 2), \`*\`(x[2])))), \`*\`(0.94045968e11, \`*\`(\`^\`(x[1], 2), \`*\`(x[3]))), \`*\`(46901.078, \`*\`(\`^\`(x[1], 2))), \`*\`(0.70616015e11, \`*\`(x[1], \`*\`(\`^\`(x[2], 2)))), \`-\`(\`*\`(0.13072873e12, \`*\`(x[1], \`*\`(x[2], \`*\`(x[3]))))), \`-\`(\`*\`(994642.52, \`*\`(x[1], \`*\`(x[2])))), \`*\`(0.41170263e11, \`*\`(x[1], \`*\`(\`^\`(x[3], 2)))), \`-\`(\`*\`(2768390.4, \`*\`(x[1], \`*\`(x[3])))), \`-\`(\`*\`(0.22189949e11, \`*\`(\`^\`(x[2], 3)))), \`*\`(0.67100205e11, \`*\`(\`^\`(x[2], 2), \`*\`(x[3]))), \`-\`(\`*\`(961344.42, \`*\`(\`^\`(x[2], 2)))), \`-\`(\`*\`(0.52533380e11, \`*\`(x[2], \`*\`(\`^\`(x[3], 2))))), \`*\`(2309741.6, \`*\`(x[2], \`*\`(x[3]))), \`*\`(0.23373385e11, \`*\`(\`^\`(x[3], 3))), \`-\`(\`*\`(2708629.4, \`*\`(\`^\`(x[3], 2)))))})`
however its elemets is shown correctly
for example the first element is shown as:
x(1) ^ 3 * 0.194986727121702600e10 + x(1) ^ 2 * x(2) * (-0.365391227687975264e10) + x(1) ^ 2 * x(3) * 0.125146284187383199e10 + x(1) ^ 2 * (-0.798715058230362229e4) + x(1) * x(2) ^ 2 * 0.351708738191481209e10 + x(1) * x(2) * x(3) * (-0.414183393126536083e10) + x(1) * x(2) * (-0.918786154503699254e4) + x(1) * x(3) ^ 2 * 0.287889598946906424e10 + x(1) * x(3) * 0.287143252997207219e4 + x(2) ^ 3 * (-0.955947121705965400e9) + x(2) ^ 2 * x(3) * 0.216166802966718006e10 + x(2) ^ 2 * (-0.165522927641286878e5) + x(2) * x(3) ^ 2 * 
Is there a way to remove the parentheses around y'(t)?
Thank you!
mapleatha
In the context of homework, there are some calculations that I do through Maple, and others that I do mostly by hand, and just show my work with Maple's engine that is great at rendering special mathematical formats (like matrices, for example).
I would like to show something like that:
It's pretty easy to make the matrices, right now my line looks like this:
But I would like to refrain for executing the "+" operator and the multiplication by x6 and x7, to have the output like in the first picture. If I disable all execution and take the statement as plain text, then obviously I will not get the correctly rendered matrices.
Is there a way, like an escape character, to prevent specific operations from being executed in one line in particular?
I'm learning Maple with the provided user manual, and it clearly says to use ctrl+= to display inline results. It simply doesn't work on my system. Running Maple 2017.3. Is this a bug?
Hi
I have to create a function "I(epsilonc)" by integrating a function "sigma(y)" from 0 to the variable "epsilonc"
but maple doesn t give me the actual formula of the integrated function, it only gives me equation 4 which is utterly useless to me.
How do I get Maple to actually calculate and give me the integrated function ??
Any help will be greatly appreciated
Download HW1_-_EC2_strain-pressure_graph.mw
Download HW1_-_EC2_strain-pressure_graph.mw
Hi
II ve managed to build an expression with one variable
I me trying to plot this expression on a defined range but maple doesn t not let me.
How do I manage to plot this expression ?
If you have any advise on how to improve my code I m open to comments
Thanks a lot in advance
Download HW1_-_EC2_strain-pressure_graph.mw
Download HW1_-_EC2_strain-pressure_graph.mw
Hi.
When I try to solve the equation 15-1/100M=5+1/600M. The result in maple is 7/6000. But the “real” result according to other calculating programs is 6000/7. Is there a setting that is causing this to happen?
Hi everibody
I work with Maple 2015 under OS-X El Capitan.
Using more than one matrix vector product (either M.V or MatrixVectorMultiply(M,V) ; M is a n by p matrix and V a column vector of size p) within the same block of commands generates an error.
Do other people have the same problem ?
Thanks for your feedback.
SomethingGoesWrong.mw
PS : I know I can do this X . <<1, 1, -1> | <-1, 2, 0>> but this doesn't explain the error I get
Hello everyone,
Compliment of the season. I received the error message while trying to solve some Pade approximant problem and try to find what could possibly be the error but could not.
Please, anyone with good informations on the possible solutions should help.
Thanks. The Link is below
hi every one
im new in maple, i have this problem , the output result (nod) dont disply after the for loop how can i disply it ?( sorry for this question, im new in this prog.)
the 2nd question is the (Typesetting:-delayDotProduct) how can i resolve this???
plz help
for i from 2 to 3 do for j from 2 to 3 do Typesetting[delayDotProduct](rod, [i, j], true) := s*imp*l*i*f*y*subs*({cx^2 = 1-cy^2-cz^2}, Typesetting[delayDotProduct](rod, [i, j], true)) end do end do;
Typesetting[delayDotProduct](rod, [1, 1], true) := collect(rod[1, 1], cos(theta));
Typesetting:-delayDotProduct
Can we overide Maple default dot derivative with 'tau' instead of 't'?
In piecewise notation (real math symbol), how I could add more cases?
How do you way text below
Maple 2015 
if i use function cat() is not