Hi I attempted to plot this but failed... my instructor gave us a list of functions according to our name and when I put them together into an equation to plot I kept getting an error. I included the function list at the bottom. I am using DEtools:

Loading Student:-Calculus1

with(DEtools):

#tangent field for dy/dx = AB + CD where A -first letter of my name, B - second letter of my first name, C - first letter of my surname, D- second letter of my surname, which in my case (Tran Lam...

How do I open a Maple package that enables the tangent fields associated with first order odes to be calculated automatically?

Hi all,

I am using Maple 13. I don't know what I am doing wrong here. I am defining variables, and it seems to be losing the assigned values of some of these variables along the way. See illustration below :

What is going on here ?

Thanks and regards,
Andrew J Fortune,
Melbourne,
Australia

Hi,

I want to create a sequence of numbers within a vector. For instance, I'd like for i from 1 to 4 to be the co-ordinates in a vector, ie [1,2,3,4]

This is what I have tried:

Vector([for i from 1 to 4 do i, end do];);

in hope of obtaining [1,2,3,4], but get error messages. Can anyone help?

I was wondering if anyone can help me with part of this problem iv been stuck on for a while now. I am wanting to write a procedure which will create an array containing a loop of all the Fourier approximations of a function f on     [-Pi, Pi].

Thanks Caitlin

I congratulate Robert Israel on being the first to attain the Mapleprimes Maple Master badge. It is well deserved.

Sometimes when I solve an equation using asumming somtings go wrong.

Exampel:  solve( x^2=4,x) asumming x>0 gives me two solutions!What is wrong?

janstef

Hello all!

Consider I have an array like this:

A := [[1,2,3], [2,1,4], [1,2,2], [4,2,3], [1,3,2]];

Now, I want to make a new array from the above one where contains those elements of "A" which their third columns are smaller than "3". (I mean in this example the third and fifth element, but in a big array I can't find these elements as simple as this example.) What should I do?

thanks!

Find the solution(s) of the differential equation E=(1+x^2)*(dy/dx)^2+y(x)^2, when E=1 and the initial condition y(0)=0 is imposed.

Plot your solutions oner the range 0<=x<=12, also plot y against log(x) for 1<=x<=10^4. Comment on the number of solutions obtained and their relation to each other.

Find the first three zeros of y(x) to 2.s.f (that is, xc such that y(xc)=0)

My solution:

E:=(1+x^2)*(diff(y(x),x))^2+(y(x))^2;

Hi colleagues:
Can someone translate this function Matlab, a Procedure of maple.
I dont really know Matlab syntax.  syntax.svd_visualize.zip . It was taken from

Gracias 

map(x-->x^2,x+y)   the ruslt is  x^2+y^2,why it's not (x+y)^2 ?

Hi,

I'm recently searching for  a way to do QFT on Maple 12(Windows) or 13(Linux).I found a relevant Q and ans/comments  almost 3 years old(nov 04,2007)-thanks to doris sanchez,John Fredsted & other contributors.There, Mr. Fredsted gave 3 links to download  3 add-on Maple packages.I found those helpful & downloaded those 3 packages(thanks to their authors & Maplesoft).

Now,I'm getting to the point:

Prob-1)Releated to the "FeynmanGraphs"...

Define a slightly messy function - in this case a sum of random Gaussians:

spikes:=sort([seq(RandomTools[Generate](distribution(Uniform(0,5))),i=1..300)]):
Spikes:=add(rand()/1e12*exp(-(Z-spikes[i])^2/2/.001^2)/(1+Z)^(5/2),i=1..nops(spikes)):

Takes no time at all to plot, or evaluate 10^3 times:

time(plot(Spikes,Z=0..5,numpoints=1000,adaptive=0));


Now put the whole thing in a procedure A(z), so that we can use A(z) as a function unless...

Hi everybody, could any one tell me " What is the job of order  round(evalhf(Digits)) ?

Amr

HEY EVERYONE,

HOW CAN I PROVE THE FOLLOWING BOTH ON PAPER AND USING MAPLE 13.

HAVING THE VECTOR A= (A1,A2,A3)

PROVE THAT