Hi,

I would be really grateful if someone can help me in solving the below attached problem in maple.

Thanks in advance.

Plot the wedge cut from the cylinder x²+y²=1 by the planes z=-y and z=0.

Hey everyone,

f_1 and f_2  are satisfying the set of non-linear integral equations I have attached to this message.
I know that I need to solve them numerically by iterations. Probably, the first guest of the function f_1 and f_2  is the driving term. a is just a parameter which can be fixed (I guess smaller than \pi/4). * is the convolution product and k is the momentum space parameter. I learnt that in order to solve them I should solve them in the Fourier space. I know also that I need to discretize these function in the “real ” space between {-L,+L} before applying the FFT or one of its relatives. Thank you for any suggestions or leads.

Hi,

I noticed that, in Maple 2020.2, the caracters seem smaller. As if the zoom had somewhat been reduced (a bit).

However, in the preferences, the default zoom level I would like is between 100 and 125% (something like 110%) (since the default zoom level is adjusted by steps of +/- 25%). I wondered if there was a way to set the default zoom level to an arbitrary value. In fact I thought it would be great to have a field instead of a list of choices, so we can choose a custom value.

Thank you

Here is my try to integrate the expression L with trapozoid or simpson 

numerical_int.mw

Dear all

I have  Lie commutations for vectors e1, e2, e3, e4, e5, e6 as follow:

[e1, e3] = e3, [e1, e4] = e4, [e1, e5] = e5, [e1, e6] = e6, [e2, e3] = -e5, [e2, e4] = e6, [e3, e5] = e6

for which the command 

Query("Jacobi")

returns the false result, which means, the vectors are not closed under Jacobi's identity. How can I find vector triplets for which Jacobi's identity does not hold?

Please find Maple file.Jacobi_identity.mw

Dear all, 

I have a time-fractional PDE as follows.  ( denotes Caputo fractional derivative with respect to t) 

for alpha=1, this is a classical PDE and the exact solution is given as follows (in a book)

Question: 

1) for alpha=1, I want to find the L2 errors and L∞ errors in a table. 

2) for alpha=0.5, Can Maple find a solution (numeric or exact)?

MY TRY: (MAPLE 2020.2)

download the code.mw

restart:
with(plots):
PDE:=diff(y(x,t),t)=y(x,t)*diff(y(x,t),x$3)+y(x,t)*diff(y(x,t),x)+3*diff(y(x,t),x)*diff(y(x,t),x$2) ;


#c is an arbitratry constant
c:=4:
exact_sol:=(x,t)->-8*c/3*(cos ((x-c*t)/4))^2;

# I selected initial and boundary conditions as follows
IBC := { y(x,0)=exact_sol(x,0),y(0,t)=exact_sol(0,t),D[1](y)(0,t)=D[1](exact_sol)(0,t),y(1,t)=exact_sol(1,t)};
 	
numeric_sol := pdsolve(PDE,IBC,numeric);

num3d:=numeric_sol:-plot3d(t=0..1,x=0..1,axes=boxed,
            color=[0,0,y]);
exact3d:=plot3d(exact_sol(x,t),t=0..1,x=0..1,axes=boxed);
display(exact3d,num3d);

pdetest(y(x,t)=exact_sol(x,t),PDE,IBC);

Hi

I have a system of pde that it is solved with pdsolve procedure.

This procedure takes a few time, but when I need to do plots, especially 3d plot the software takes a lot of time (several hours).

How can I make plots faster?
Thanks.

It's been about a year since I've been able to display any worksheet at all on MaplePrimes. In the example below, I took a very simple worksheet that had been displayed in an Answer to another recent Question and tried to upload it. So, we know that it's somehow possible to display this particular worksheet on MaplePrimes.

Maple Worksheet - Error
Failed to load the worksheet /maplenet/convert/prove.mw .
Download prove.mw

I am facing difficulty to realize this double iterative process. 

The equations in question are 

The flow chart for the iterative process is given as

The different parameters are defined as

alphan:=1.72*10^(-4):
alphap:=2.037*10^(-4):
L:=1.3*10^(-3):
A:=2.08*10^(-6):
kp:=1.265:
kn:=1.011:
sigmap:=1.314e-5:
sigman:=1.119e-5:
alphapn:=alphap-alphan:
Rpn:=L/(A)*(sigmap+sigman):
RL:=1:
Kpn:=(A/L)*(kp+kn):
cf:=4205:
cc:=4153:
hf:=80:
hc:=1000:
Tfin:=773:
Tcin:=353:
mf:=20:
mc:=20:

Influence_of_different_cooling_methods_on_thermoelectric_performance_of_an_engine_exhaust_gas_waste_heat_recovery_system.pdf

Has anybody tried Maple 2020.2 on a new Macbook with Apple silicon? I believe native support is in development, i was curious if anyone had experience running Maple via Rosetta 2?

Hello everyone,

I have a problem when searching in a document. Namelly is there a way to search in the whole worksheet including all code editing regions?

In order to show a point, there is a worksheet. I determine a variable

x11:= 12;

This variable is used in the document and code edit regions. Then I want to change a variable name from x11 to x11data. In order to do that, I use Ctrl+F to find all the times when the variable is used. I have a problem while  searching 'x11'. Namelly, the cases outside a code edit region are displayed, and the ones that are situated in the code edit regions are not seen.

Best regards

I used dsolve to solve the Initial value problems numericaly.
When I set the parameter range=1..5*10^4 , it works and cost only about 200s cpu time.
But if I set range=1..2*10^5, it stop running ( cpu time stop) when the mserver memory reach about 1.5 G. (the memory record in the bottom-right of maple interface is about 700M .)

What is the reason please?  

I need help for designing a procedure for Schubert Kronecker polynomial program in maple.

so i have a little school laptop and maple on it works just fine. Then i have my all powerful gaming desktop with an AM RTX 3700x ,RTX 2070S, SSD and 32GB ram.

I have never seen maple run so slow on any pc as i have on my desktop. It is completely impossible to use maple. Just writing normal input like 123 takes forever. One thing i have noticed is evertime i do some sort of action, then the icons to the left slowly go from being colored to grey and back to colored before i can do a new action.

The two images below show an example here you can see it is about to go from being colored to being grey, when i try to mark stuff. I have tried to install the x64 and x86 version, i have tried giving it 4096 ram in the ini file and i have tried removing splash. Nothing works....