Dear everyone.
I'm trying to substitute expressions which are represented by square root into eq.
But, it doesn't work well as shown in the below figure.

First, the 'a' is only substituted into numerator. I'd like to know how 'a' can be also substituted into denominator.
Second, the 'b' can be substituted as I ordered to Maple.

Advice would be appreciated . Thank you !  (If you need my maple code, this will be referred in the below.)

Hi,
I need to solve a big linear system (sparse, if it helps). I first used the "Matrices" and it worked perfectly, but then the matrix got bigger and I got the message "assigning to a long list, please use Arrays". So I learned how to manipulate Arrays and basically wrote the whole program again, but I couldn´t find how to solve A.X=B when A and B are Arrays. And it seems like nobody talks about that on the internet :( please don´t tell me that in 2012, with...

I am dealing with a problem in engineering mechanics, but my when using maple to solve the governing nonlinear equation with 4 bcs, I meet with error. 

Error, (in dsolve/numeric/bvp) initial Newton iteration is not converging

my code is :

deq := diff(y(x), `$`(x, 4)) = -.364*(diff(y(x), x))^2*(diff(y(x), `$`(x, 2)))+1.74*10^(-7)

bc := y(0) = 0, (D(y...

Is there a way to modify icon size into palette?

I have a collection of functions defined either in terms of a single variable - call it r - or in terms of (r and) the other functions of r.

To be more specific, there are two free functions B(r) and N(r), a function theta defined in terms of N(r) and B(r) (and their derivatives) and r, and a free function V(theta).

Finally I have a function, call it f, written in terms of B(r) and N(r) (and their derivatives), r, and V(theta) and its derivatives with respect to both theta and r.

How to convert Maple code to Matlab ?

comment je doiy faire pour convertir mon code Maple en Matlab?

merci d'avance pour votre aide.

Cordialement.

Hi,

I am trying to get maple to "simplify" the product of two infinite sums, according to Laurent's condition, as follows:

Given two Fourier series expansions,

F = sum{h=-inf..inf, f(h)*exp(i*h*x)}

G = sum{s=-inf..inf, g(s)*exp(i*s*x)}

Their product may be written as F*G, and then simplified as follows:

F*G

= sum{h=-inf..inf, f(h)*exp(i*h*x)} * sum{s=-inf..inf, g(s)*exp(i*s*x)}

= sum{h=-inf..inf, sum{s=-inf..inf, g(s...

I have an Array which storage consist ot other arrays with different datatypes...so my question is: Is there a way to protect this Array from being scaned from the garbage collection? I've got that if an array is saved as hardware float datatype it wont be touched from the gc, but how to do it when the datatype is not a hardware float? Might be something like MapleGcProtect, but not for external calls !!!

Thanks in advance.

Hi, does anyone know how I go about getting the y''(x) derivative notation to render properly in Maple TA without the primes being unreadably small? Ideally I'd like to author the question in LaTeX.

Many thanks in advance.

conisder

>eq1:=n=(k[f1]^3+k[f2]^3)/6/Pi^2;


> eq2:=el*V=h_bar^2/2/m*(k[f2]^2-k[f1]^2);


> eq3:=solve({eq1,eq2},{k[f1],k[f2]});

> eq4:=allvalues(eq3):

Solving this i get a very very massive result. Let me take a branch:

eq5:=subs(eq4[2],k[f1]);

I get

1/h_bar*(-(1/2*n*Pi^2*h_bar^3/el/V/m+1/2*...

May I obtain, with Maple, an answer, true or false, about general questions of Logic and Set Theory?

i.e. Without constructing a Set, I want to know if is it true or false, that "if A is a subset of B and B is a subset of C then A is a subset of C".

Thanks in advance

Angelos58

I want to make triangle oAB with the angle AoB equal to 2*Pi/3. The following code is not right.

> restart:

N:=10:

L:=[]:

for x1 to N do

for y1 from x1 to N do

 for z1 from y1 to N do

 for x2 to N do

 for y2 to N do

 for z2 to N do

 a:=sqrt(x1^2+y1^2+z1^2):

b:=sqrt(x2^2+y2^2+z2^2):

c:=sqrt(a^2+b^2-2*a*b*cos(2*Pi/3)):

What is the next two terms for this pattern...

1, -2, 2, -4, 0, ...

I'm trying to plot and fill the area between these two curves from x[0,450]

line1:=20-0.05*x

line2:=2+0.0002*x^2

I can do it separately but when I do them together, it gives me extra area that isn't shared between the two curves.

Also, whenever I try to plot them together I get the following error message:

Error, (in plot) unexpected option: 2+0.2e-3*x^2

Any help will be greatly appreciated!

hi guys,

say i have an expression like this: