with(LinearAlgebra);
CAb := <1, 1, 2;1, 2, 3;1, 3, 1>;
# Get the QR decomposition of CAb:
Q, R := QRDecomposition(CAb); R;

Error in R

Maple Matrix(3, 3, {(1, 1) = 1.7321, (1, 2) = 3.4642, (1, 3) = 3.4642, (2, 1) = 0., (2, 2) = 1.4142, (2, 3) = -.70710, (3, 1) = 0., (3, 2) = 0., (3, 3) = 1.2248})

MathCad Matrix(3, 3, {(1, 1) = 1.7321, (1, 2) = 3.4642, (1, 3) = 3.4642, (2, 1) = 0., (2, 2) = 1.4142, (2, 3) =...

I would like to pay attention to http://www.ams.org/samplings/feature-column/fc-2012-12, where a discrete analog of vector calculus on graphs is applied to rankings. In my opinion, it would be useful to implement that in the GraphTheory package.                           ...

Hello,

I am trying to add an if statement to maple code for example if U(tk) less or equal to 4 then 

the initial condition=0 else the initial condition=value .

I am getting this error:

Error, cannot determine if this expression is true or false: U(365)

restart;

 k := 0; B[1] := 0.001/365; B[2] :=0.002/365:

Hi, I'm working on fitting model. For some reason is taking way too long to evaluate it actually hasn't finished it at all. Im running on i7. Thanks for any help. this is my code: 

> X := Vector([0, 170, 0]);
              
> Y := Vector([0, 11, 56]);
               

Q(t) := -(36788*76)*(.28*K*p/(-p-exp(-r*t...

Ten more Clickable Calculus solutions have been added to the Teaching Concepts with Maple section of the Maplesoft web site. Solutions to problems include examples in algebra, differential and integral calculus, lines-and-planes in multivariate calculus, linear algebra, and vector calculus.

The algebra additions include an example illustrating how a

Hey all :)

restart; 
W:=(x,t)->(8*R/Pi^2*sum((1/(2*n-1))^2)*sin((2*n-1)*pi/2)*sin((2*n-1)*pi*x/2*L)*(cos(c*(2*n-1)*pi*t/2*L)),n=1..infinity);
                
L:=0.25;
                              
T:=2500;
                             
rho:=0.01;
                              
R:=0.005;
                           
c:=sqrt(T/rho);

evalf(W); (this just comes up with W)
                          

I have tried...

Hi,

I'm having a little trouble displaying the desired solution when using what might otherwise be refered to as the 'symbolic toolbox' - I'm a matlab user..

The output from maple is great! so much cleaner than matlab in this instance. The problem I'm having however is displaying the solution of simple algebra pproblems

ex: I would like to verify my handcalculation of cramers rule.

Given

I am currently trying to integrate a long string of fractional sine and cos terms with a cos term on the denominator and other exponential multipliers, but all variables and coefficients are real (and I have put this assumption in Maple).

When I integrate them on Maple it is automatically simplifying the result using Euler's rule to give me a complex fraction with a complex numerator and denominator. This is not very helpful as I need to use the result in further calculation,...

Loading a customised package on my computer I can use all of its functions easily. But I am looking to find the maple code of the procedure that make this function works, I am sure there is a trick but I am struggling to find it. I researched online quite a bit without any success as the threads I found about making your own packages are too technical for me.
Would anyone know how to do that?

Thanks in advance.
P.K

I can't solve probably very easy problem. How to plot a filled semicircle which is rotated across one axis by an angle alpha? I came to the solution which I don't consider as the best one (since e.g. it will not work for alpha=Pi/2*(odd integer)) and I believe someone of you will show me a better approach. Thank you in advance.

My solution:

alpha := (1/6)*Pi:
plot3d([x, y, y*tan(alpha)], x = -1 .. 1, y = 0 .. sqrt(1-x^2)*cos(alpha), axes = normal, labels = ["x", "y", "z"...

I made a prodecure:

with(numtheory);
divs:=proc(k)
local n,q:
for n from 1 to infinity do
q:=tau(n);
if k=q then break;
end if;
end do;
return [q,n];
end proc;
[seq(divs(i),i=1..20)];

I have make it for i from 1 to 100 too, but it should work in five minutes. I think it should be made somehow with the integer factorization, but i can't realize it. Can someone help me?

Eryndis

hi,

is there a procedure to convert a number (or list of numbers) into its english equivalent?

eg

 1 = "one", 2= "two", ......, 100 = "one hundred"

Fine of sequence

Hello again Maple forums, it's been a while but I'm confident I came to the right place :)

I'm trying to fit our data (attached: maphelp.mw) to this function of Z:

It has the linear parameters a-f...

Hello,

First of all I'm French so excuse my English.

I have some questions about Maple 14 on MacOSX,

1- I want to use the "proc()" fuction with an "if" fuction in the "proc()" but it's not workink, I tested many display with the "print" command to evaluate where is the problem and now I can say that the problem is in the "if" fuction. Here his my worksheet :

> suite := proc (n) local u, k, i; u := n; k := 0; for i from 0 to 10 do print(irem(u, 2...