Having read the above I decided to try it on a substitution problem I had last year on a set of equations. Work sheet containe an example. I successifuly applied algsubs to the problem. It can be slow and their is no easy way I see to know when the substitution is complete. so what I did go round the loop 2, 3, 4, 5 times. Crude!

Decided to try "side relations" with simplify here but it comes out with a totally different answer (not correct).

Could somebody explain why?

I have constructed 2 procedures:

f(n) and h(n) which i build inside a double sum but when trying to calculate it says to many levels of recursion.

but when doing a simple example it works.

so the question is basically: why cant one put functions defined by proc within a sum??

Dear Maple users,

Is there a way to describe derivatives treated as binary operators in infix notation, in which the derivatives is applied either to the left or right operands. This is useful, for example, when defining generalizations of the Poisson bracket. For a pair of functions f and g, the left and right derivatives are respectively defined as

Hi,

I have an expression which contains terms like cos(3*x)*cos(x) + sin(3*x)*sin(x). In this expression, I replace the prevous terms by using applyrule as:

applyrule([cos(3*x)*cos(x)=1/2*(cos(2*x)+cos(4*x)), sin(3*x)*sin(x)=1/2(cos(2*x)-cos(4*x))],expr);

Is there a way to generalize this so that I may replace all forms of sin(n*x)*sin(m*x) = 1/2(cos((n-m)*x)-cos((n+m)*x))?

Thanks for your help.

I want to write the equation of the plane passing through the three points A, B, C has the form ax + by + cz + d = 0 where a, b, c, d are integer numbers, a >0 if a <> 0; b>0 if a = 0 and b<>0,...and igcd(a, b, c) = 1.

If the coordinates of the vertices A, B, C are all integers, for example A(2,2,2), B(1,2, -1), C(1,-1,-4), I tried,

with(geom3d):

point(A,2,2,2):

point(B,1,2, -1):

How to color only certain bounded/intersection area of a graph in Maple?

Solve the equation : 58.54*x^2+19620*x^(1.85)-11485.54=0

how to graph this two paraboloids into one graph in Maple? z=x^2+y^2 and z=2-x^2-y^2  I try to use Display, Display3d commend, and it doesn't work.

>with(plots)

>f:=(x,y,z)->z=x^2+y^2;

>implicitplot3d(f(x,y,z),x=-5..5,y=-5..5,z=-5..5);

>f:=(x,y,z)->z=2-x^2-y^2;

>impliticitplot3d(f(x,y,z),x=-5..5,y=-5..5,z=-5..5);

and if I want to combine the two graph into one, what should I do next?

well i know this blog is for maple problems and question but badly need your help guys. i want to know difference between cubic spline and cubic b-spline in simple words..

Find the function satisfying the following conditions:

f(-6)=2400,f(-4)=432,f(-3)=120,f(-2...

Problem_116_Solutio.htm

Hi, would like to know if maple commands can replicate/automate this solution.

rsolve({a(n)=9/19*a(n+1)+10/19*a(n-1),a(0)=0},a)

=-9a(1)+9a(1)(10/9)^n

.......?

Hi, 

     I'm using fsolve in a loop, as an example can we find the first 10 roots of sin(x) and store then in an array.

 restart;

     x:=array(0..10):

     x[0]:=0:

     for i from 1 to 10 do

           x[i]:= fsolve(sin(y)=0, y=x[i-1]..10 , avoid={y=x[i-1]});

     end do;

Firstly this solve only 0,2*Pi, 3*Pi...Why does it skip Pi? also can I change the range to x[i-1]..infinity? 

Hi 

maple won't seem to let me plot e^x*sin(2*Pi*x ) for some reason is there any reason why?

Hello Everyone,

I got a question about the inverse laplace transform of the classic second order system:

zeta < 1

if I take the inverse laplace transform, it will give me root of (zeta^2-1) term, how can I force maple to consider the range of zeta before doing inverse laplace transform?

the follow is a code that I've started.  This code is from working template that I created previously. that works and iterates as expected, but this equations with these parameters gives me the pintf error in bold at the bottom. 

Can you please help with the error at the bottom of code that is in bold????

> restart;
> Digits := 14;
                               14
> f := proc (x) options operator, arrow; 3-x-x*exp(r*(1-x...