The way of computing functions...

Dear Sirs,

I am a post-doc working on the university and I am dealing with elliptic integrals together with Maple, nowadays. I am using for my computations en EllipticK(.) function and I need to know how this function computes its exact values for a given parametr of an elliptic modulus. Does it use some kind of a series(how does it pertinently look like?) or is it tabelated and consequently interpolated? Please, will you be so kind and could you give...

Detect symbolic exponent/floating point in an expr...

Given an expression for e.g. x^n+ y^3.5, how to extract the symbolic/floating point exponent, I tried with degree method but it fails whenvever there is symbolic or floating point exponent. Is there any alternative ?

Thanks,

Regards, Satya

Why has my sine graph gone weird?...

I've plotted this graph, but it's supposed to be smooth, any idea what's happened?

Can anyone suggest some non-routine class projects...

I'm looking for several challenging projects for a Calculus II course using Maple which I'll be teaching in Spring 2013.  By challenging I mean that the project will have several steps including both conceptual and computational aspects.  I'd also like them to be suitable for group work if possible.  I'd be willing to devote from 3-5 class periods for each of three or four different projects.  Our Calc I and Calc II are five hour...

Problem with initial/boundary conditions solving t...

Hello,

I'm trying to solve the effects (deflictions, tensions, etc) of a load on a timoshenko beam. It uses two partial diffential equations, wherein q is the load:

`> PDE1 := kappa*G*A*(diff(y(x, t), x, x)-(diff(theta(x, t), x)))-rho*A*(diff(y(x, t), t, t))-q;> PDE2 := E*J*(diff(theta(x, t), x, x))+kappa*G*A*(diff(y(x, t), x)-theta(x, t))-rho*J*(diff(theta(y, x), t, t));`

The boundary conditions are that in the corners the moments (derative of theta...

error in solving two coupled ode equations...

Hi everyone i've tried to solve two coupled nonlinear ode but maple gives me these two errors can you help me with this?

ode1 := diff(f(x), x, x, x)+3*f(x)*(diff(f(x), x, x))-2*(diff(f(x), x))^2+g(x) = 0;
ode2 := diff(g(x), x, x)+(3*10)*f(x)*(diff(g(x), x)) = 0;
bcs1 := (D(f))(0) = 0, f(0) = 0, (D(f))(6) = 0;
bcs2 := g(0) = 1, g(6) = 0;
sys := {bcs1, bcs2, ode1, ode2};
dsn := dsolve(sys, numeric);
print(plots:-odeplot(dsn, [x, g(x)...

Why doesn't this command work as we expect?!...

Dear Friends, I asked my question here http://stackoverflow.com/questions/13677399/why-this-program-cant-work and got one answer. I don't want to prove that if Maple is unable solve my problem or not, but want to know if you agree with the answer there. What can I do with this problem noted there which happened during teaching in the class and made me ashamed badly.

Best and Thanks.

Non-linear PDE problem...

`Hey everyone. The last few days I work on a non-linear PDE. `
`U*`&PartialD;`(F(s))/`&PartialD;`(x) = -k*sigma*cos(theta)*`&PartialD;`(F(s)*kro(s)*`&PartialD;`(J(s))/`&PartialD;`(x))/(`&mu;o`*sqrt(k/phi)*`&PartialD;`(x));`
`with boundary conditions: when x=-∞: s=swi       and  `
`x=L : U*dF(s)+k*sigma*F(s)*kro(s)*`&PartialD;`(J(s))/(`&mu;o`*sqrt(k/phi)*`&PartialD;`(x))`
`I need to plot...`

Error in LA_Main:-SingularValues...

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) =...

if statement: Error, cannot determine if this expr...

`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:

Too long evaluation...

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...

plotting graphs...

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...

display solution - symbolic...

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

Integrating string of real Cos/Sine terms - gettin...

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,...