Hi everybody!

I am trying to do something as simple as plotting z=z(r,theta). I just don't get. Neither the help file nor techsupport have been of much use. What am I missing? Why is it that you have no axis annotation like you do in case of cartesian coordinates?!

thanks in advance

dimitrios

^^^^^^^ that is from copying and pasting from the maple.

otherwise it'd look more like this

So... when i pressed enter it did nto do anything but retype the equation.

^^^^^^^ that is from copying and pasting from the maple.

otherwise it'd look more like this

So... when i pressed enter it did nto do anything but retype the equation.

Hi all,

 

I know that if p is not an integer, the solution of the modified Bessel equation is

 

The following video shows you a bit of the wonders of Maple and how it improves your learning experience.

http://www.maplesoft.com/products/maple/demo/aca/The%20Student%20Experience/StudentExperienceApril17Final.aspx

Given that
3*(sum(cot(m*Pi/(2*M+1))^2, m = 1 .. M))

is a polynomial of degree r in M, find r and the coefficient of M. (The coefficient is an integer)

Any ideas how to go about solving this problem? When i input this particular indefinite sum into Maple it does not generate a polynomial.

Good morning and evening! I got a procedure f1, which takes two numbers and outputs one. Just a numeric computation. NLPSolve(f1, -1..2, -2..2); Warning, no iterations performed as initial point satisfies first-order conditions but plotting a 3D graph shows me a good, smooth minimum. Setting starting point does not help. It seems that NLPSolve thinks that gradient is equal to zero, but why?

Hi,

I’m quite new to maple so I need a bit of help. I am trying to solve the Navier-Stokes equations (NSE) in 2D along an infinite channel  which has fluid being sucked out of it through the walls.

∂u/∂t + (u∙grad)u=-(1/ρ)grad(p)+ (nu)grad^2u

I need to write down the NSE.
u=(u,v,0) is the velocity of the fluid.
The flow is steady so ∂u/∂t=0.
I need to take the curl of the NSE to eliminate the pressure term as taking the curl of
gradp=0.

hi,

I have two columns as seen below. I want to sort column Y in descending order but I want to                                                                      return the the X value of such a Y value as well.

<p>Hi, I need help.</p>

Hi, Would appreciate some help - Re: checking solutions of the first order DE in Maple? Tried to search in Help, but could only find solutions to 2nd order DE. For instance, when I enter: > ode := diff(y(x), x) = y^2*exp(x); d 2 --- y(x) = y exp(x) dx > solve(ode); I get: Error, (in solve) cannot solve expressions with diff(y(x), x) for x > Many thanks! Antonio

Hi all,

 

What am I doing wrong?

Hi guys. I hope i do this correctly... So I want to have this: f(p) := proc( p ) if p::even then print(((((p)!)/((2^(p/2))*(p/2)!))^2)) else print(0) end if end proc: as an initial condition, b[p,0], for an array, b := array(0..500, 0..500). It doesn't work if I just do a for loop. At least I don't think it works; say I do for p from 0 to 500 do b[p,0] := proc( p ) if p::even then print(((((p)!)/((2^(p/2))*(p/2)!))^2)) else print(0) end if end proc od: Then when I try b[4,0]; it just returns b[4,0], and not 9.

Hi all,

While working with the method of Frobenius to solve a second-order homogeneous equation,  I stumble at a point where I have to divide two series.

You will find in the attach worksheet what I mean.

Frobenius division.mw

Any help would be appreciate.

Thanks in advance

Mario

Please help me check the attached worksheet. I defined the target functions by two ways: factor one parameter delta out in two terms or totally expand them (you can uncomment the definition to play by the remarks). The plots drawn or the evaluation done in the end are quite different. When Maple do maximization or evaluation, what is the difference between these two "algebraic identical" forms?