I've stumbled across this double integral... int(int(2*x*sin(y),y),x); for which Maple can do it perfectly. However, if I specify the range for x and y, Maple will complain: int(int(2*x*sin(y),y=0..1),x0..1); Error, (in assuming) too many levels of recursion I'm just wondering if there is any other way around of evaluating this definite integral?

How do I plot the inequality x<7 on the real number line?

How do I plot the points -2.5, -2,.5, and 1.5 on the real number line? I found how to plot in the 2-D plane, but I just want to plot on the real number line.

 

How do i find a nonzero value of C so the function u(x,t) = c(e + e)  satisfies the equation  (du/dt)+u(du/dx)+(du/dx) = 0

I've tried with maple help but seems like i'm getting no where with this.

Any suggestion or help with this is much appreciated.

Hello - I'm trying to double check a hyperbolic pde I solved but I don't know how to input the following boundary conditions in order to run pdsolve.

u(x,0)=f(x)

du/dx(x,0)=g(x)

What is the maple syntax to write these as boundary conditions?

Thanks.

 

How do I get the entire astroid given by the equation x^2/3+y^2/3=1 to show?

I've used implicitplot(x^2/3+y^2/3=1,x=-1..1,y=-1..1), and only 1/4 of the astroid is shown.

thanks for your help.

 

I need to find I₁ to I₉. I need to find this using the Kirchhoff's Current Law and Kirchhoff's Voltage Law. ( we haven't seen yet what both of these laws are)

Hi again. Thanks for all the help last time. I've got (hopefully) just one more question. It's kinda difficult to explain... I want to plot the points determined by a[2, 2*n]/a[2,2*(n-1)] against 1/n (actually 1/n versus a[2, 2*n]/a[2,2*(n-1)]), for large n. I'm pretty lost. Should I be computing the points from the recurrence relation with a 'for' loop and then re-assigning 1/n for each one instead of n and then putting the a[]/a[] and 1/n into an Array, which I can then plot? Thanks guys, Tom

Hi,  Maple seems to be unable to solve this kind of differential equation.

 

dgl:=diff(f(x),x)=f(x)-f(x-1);

 dsolve(dgl);

 

Error, (in ODEtools/info) found the indeterminate function f with different arguments {f(x), f(x-1)}

Is there any command or package which allows me to construct a general rooted tree? It seems that the GraphTheory package can only construct complete binary trees or complete k-ary trees...... More generally, how can I program or organize my data using a tree data structure?

Thanks,

Peter

i know how to find limit to one variable but how do go about doing limit when we are giving something like this

  lim (x^2+y^2) ^ (x^2 * y^2) as (x,y) --> (0,0)        

?

They do ask me to use graph to help me out in this limit, but i have no idea how

 

thx for any help

Hello,

I have created a module which implements several high-level procedures. Each of these call low-level procedures which are - in principle - of no interest to the end user.

Now, when I use the "module:-function()" syntax, everything seems OK. However, when I write this module as a package, using "savelib", and I try loading it back, and using it, the low-level procedures are returned unevaluated. Which obviously is not what I want...

Is there a way to force this evaluation?

The problem:
I'm doing some calcs long to compute (some days). With Maple 12 the print command shows nothing, it seems executed when returning from the procedures.

The question:
How can I print intermediates results/progress in a procedure so they appears immediatly ?

Thanks

Hi

 

HI all,

I have this polynom