I'm dealing with an equation of the form shown below:

E-I*(Pi-5)^.5*r*(cos(2*phi)-sin(2*phi))

Basically, I am trying to solve for E in polar co-ordinates, across a radius of r, in a given range of phi = 2*Pi - so, for a given value of r, there would be several values of E around a circle. I was toying with the idea of using the fsolve command to solve for the range of r first, then create a data matrix, then continue solving for phi, but I have no idea how to bridge the gap between the two. Thanks.

Hi, I have to solve several linear equations containing vectors and matrices symbolically. For example, I want to isolate for one variable in such an equation. Unfortunately, maple does not know that the variables are vectors/matrices and divides by them instead of multiplying with the inverse from the left, or matlab exchanges the order of the variables because it "thinks" they are scalars. Does anybody know what I can do to prevent this? Is there a special Toolbox for those calculations? Can I assign the variables a type like scalar/vector/matrix? Thanks, Zebro

i was able to solve this equation before, am i doing smth wrong

> infolevel[pdesolve]:=5:
> pdesolve(-a*u(t,x)+diff(u(t,x),t)+b*diff(u(t,x),x,x)=0,u(t,x));
pdesolve/analyze:   equation order   2
pdesolve/analyze:   derivatives in equation:   {x, t}
pdesolve/analyze:   linear equation
pdesolve/exact/2:   Do not know how to handle equation

 

 

 

Using the geometry intersection command in a loop, each time there is no intersection found, the message "intersection: there is no point of intersection" is printed. Using printlevel:=0, does not suppress printing of this message. Is there another solution?

how do i convert a image into a matrix in maple ....as we did in matlab ......if maple has such a capability ?

I am a beginner in maple.
I encountered a difficulty in solving the below equations:
I have four equations :

192.5 = 6.8889*10^8*(X1/(exp(1199.562077/Y1)-1)+X2/(exp(1199.562077/Y2)-1));
977.9 = 1.755442918*10^7*(X1/(exp(575.7897971/Y1)-1)+X2/(exp(575.7897971/Y2)-1));
4642.7 = 2.20449676*10^5*(X1/(exp(239.9124155/Y1)-1)+X2/(exp(239.9124155/Y2)-1));
6139.8 = 17143.12466*(X1/(exp(143.9474493/Y1)-1)+X2/(exp(143.9474493/Y2)-1));

I would like to calculate X1,X2,Y1,Y2 from the above equations.

Hello, How do I calculate summations represented on paper in the sigma format? Example, part (c) here: http://www.mathhelpforum.com/math-help/151784-post2.html Would appreciate assistance. Best, wirefree

Dear colleagues, i am new in Maple. I am solving a system of four differential equations.I need :

1) to plot the second derivative of the theta[1]. I can plot the theta[1] and its first derivative;

2)to plot V40:

Thanks in advance:)

The code is:

restart;

Hey its Paul, I have another similar post to this one where I ask this question as a continuation of a question I had previously asked. However I am going to keep the two questions separate.

At each point I have the same data as I had in the previous question:

c:  an integer from 1-5 specifiying which differential equation was used to calculate the z value at this point (this information shold be represented by different coloured vectors)

x: this is just the x position of the data point

y: this is just the y position of the data point

Hey guys, I am currently writing a dynamic programming program. This program is used to simulate and optimize turbine operations.

The program produces a grid of nodes. At each node (each node has an X and Y coordinate), one of 5 differential equations is evaluated. A flag indicating which differential equation was used, as well as the dZ from the DE is stored at each node.

This is going to seem really stupid, but I've never used Maple before and I just can't figure out what I'm doing wrong. I'm trying to plot a graph of 3 functions (or rather, one function and its first and second derivatives), and it seems like I have the right formula typed but no graph is appearing. This is what I entered:

 

g0 := x^(2/3)sin(x);

g1 := diff(g0,x);

g2 := diff(g1,x);

p0 := plot(g0, x=0..3, y=0..3):

p1 := plot(g1, x=0..3, y=0..3):

p2 := plot(g2, x=0..3, y=0..3):

display({p0,p1,p2});

 

hi all, sorry, i'm a newbie on maple

i have to simplify some equation, then i heard that it can be done by maple. so i tried using maple 10 to simplify my equation.

but after i write down the equation, and press enter, i got "unable to match delimiters" message. what should i do to get the simplified equation?

here is the equation:

I trying to fit an Eckartfunction with 3 parameters to my curve I've calculated with gaussian03 (IRC).

my given points for the curve are:

Hello,

with(VectorCalculus):

SetCoordinates( 'cartesian'[x,y] ):

How do I make  animations of an ellipse? E.g. stretching, rotating, translating in both the x an y direction? I thought it was easy task, but after several hours I still have no solution.

Anyone?

kind regards,

Harry Garst