MaplePrimes - Unanswered Questions
http://www.mapleprimes.com/questions
en-us2019 Maplesoft, A Division of Waterloo Maple Inc.Maplesoft Document SystemThu, 23 May 2019 02:42:01 GMTThu, 23 May 2019 02:42:01 GMTQuestions asked on MaplePrimes that have not yet received an answerhttp://www.mapleprimes.com/images/mapleprimeswhite.jpgMaplePrimes - Unanswered Questions
http://www.mapleprimes.com/questions
how to use Maple to prove an equation based on a known partial differential equation and its boundary conditions
https://www.mapleprimes.com/questions/227128-How-To-Use-Maple-To-Prove-An-Equation?ref=Feed:MaplePrimes:Unanswered Questions
<p>Dear Maple friends~</p>
<p>Recently I am thinking a question about how to use Maple to prove an equation based on a known partial differential equationand its boundary conditions.</p>
<p>Although I can Prove it with hand computation ,it still has some difficulty and it will be really hard if its partial differential equation become more complex(As a matter of fact, it will happen).So I think of Maple and want to take advantage of computer.However,I get few ideas how to realize it .The details are as follows：</p>
<pre class="prettyprint">
alias(u=u(x,t)):
pde:=diff(u,t)-diff(u,x$2,t)+4*u^2*diff(u,x)=3*u*diff(u,x)*diff(u,x$2)+u^2*diff(u,x$3);
N:=5;#actually N can be any positive integer!
bcs:=eval(u,x=-infinity)=0,seq(eval(diff(u,x$ha),x=-infinity)=0,ha=1..N),eval(u,x=infinity)=0,seq(eval(diff(u,x$ha),x=infinity)=0,ha=1..N);
E:=Int(u^4+2*u^2*diff(u,x)^2-diff(u,x)^4/3,x=-infinity..infinity);
#try to prove the following equation
diff(E,t)=0</pre>
<p>The written proof is as follows:</p>
<p><img height="100px" src="/view.aspx?sf=227128_question/1.jpg" width="100px"><img height="100px" src="/view.aspx?sf=227128_question/2.jpg" width="100px"><img height="100px" src="/view.aspx?sf=227128_question/3.jpg" width="100px"><img height="100px" src="/view.aspx?sf=227128_question/4.jpg" width="100px"><img height="100px" src="/view.aspx?sf=227128_question/5.jpg" width="100px"><img height="100px" src="/view.aspx?sf=227128_question/8.jpg" width="100px"><img height="100px" src="/view.aspx?sf=227128_question/7.jpg" width="100px"></p>
<p>Therfore,I submit such a problem and look forward your solutions and suggestions sincerely~</p>
<p>Dear Maple friends~</p>
<p>Recently I am thinking a question about how to use Maple to prove an equation based on a known partial differential equationand its boundary conditions.</p>
<p>Although I can Prove it with hand computation ,it still has some difficulty and it will be really hard if its partial differential equation become more complex(As a matter of fact, it will happen).So I think of Maple and want to take advantage of computer.However,I get few ideas how to realize it .The details are as follows：</p>
<pre class="prettyprint">
alias(u=u(x,t)):
pde:=diff(u,t)-diff(u,x$2,t)+4*u^2*diff(u,x)=3*u*diff(u,x)*diff(u,x$2)+u^2*diff(u,x$3);
N:=5;#actually N can be any positive integer!
bcs:=eval(u,x=-infinity)=0,seq(eval(diff(u,x$ha),x=-infinity)=0,ha=1..N),eval(u,x=infinity)=0,seq(eval(diff(u,x$ha),x=infinity)=0,ha=1..N);
E:=Int(u^4+2*u^2*diff(u,x)^2-diff(u,x)^4/3,x=-infinity..infinity);
#try to prove the following equation
diff(E,t)=0</pre>
<p>The written proof is as follows:</p>
<p><img height="100px" src="/view.aspx?sf=227128_question/1.jpg" width="100px"><img height="100px" src="/view.aspx?sf=227128_question/2.jpg" width="100px"><img height="100px" src="/view.aspx?sf=227128_question/3.jpg" width="100px"><img height="100px" src="/view.aspx?sf=227128_question/4.jpg" width="100px"><img height="100px" src="/view.aspx?sf=227128_question/5.jpg" width="100px"><img height="100px" src="/view.aspx?sf=227128_question/8.jpg" width="100px"><img height="100px" src="/view.aspx?sf=227128_question/7.jpg" width="100px"></p>
<p>Therfore,I submit such a problem and look forward your solutions and suggestions sincerely~</p>
227128Wed, 22 May 2019 12:13:40 ZJaneaseforJaneasefordetermination of Laplacian in a new form
https://www.mapleprimes.com/questions/227124-Determination-Of-Laplacian-In-A-New-Form?ref=Feed:MaplePrimes:Unanswered Questions
<p>Hello,</p>
<p>How I can write a code for the determination of Laplacian in a new form that is introduced in the maple code (First line).</p>
<p>Thank you.</p>
<p><a href="/view.aspx?sf=227124_question/FOR.mw">FOR</a><br>
<br>
<font>Maple Worksheet - Error </font><br>
<br>
<font>Failed to load the worksheet <strong>//convert/FOR</strong> </font><br>
</p>
<p><a href="/view.aspx?sf=227124_question/FOR.mw">Download FOR</a></p>
<p> </p>
<p> </p>
<p>Hello,</p>
<p>How I can write a code for the determination of Laplacian in a new form that is introduced in the maple code (First line).</p>
<p>Thank you.</p>
<p><a href="/view.aspx?sf=227124_question/FOR.mw">FOR<gwmw class="ginger-module-highlighter-mistake-type-3" id="gwmw-15584941988499897614303">.</gwmw><gwmw class="ginger-module-highlighter-mistake-type-1" id="gwmw-15584941988492324782553">mw</gwmw></a><br>
<br>
<font>Maple Worksheet - Error </font><br>
<br>
<font>Failed to load the worksheet <strong>/<gwmw class="ginger-module-highlighter-mistake-type-1" id="gwmw-15584941993027527166760">maplenet</gwmw>/convert/FOR<gwmw class="ginger-module-highlighter-mistake-type-3" id="gwmw-15584941993028910773511">.</gwmw><gwmw class="ginger-module-highlighter-mistake-type-1" id="gwmw-15584941993020644936938">mw</gwmw></strong><gwmw class="ginger-module-highlighter-mistake-type-3" id="gwmw-15584941993028979636226"><strong> </strong>.</gwmw> </font><br>
</p>
<p><a href="/view.aspx?sf=227124_question/FOR.mw">Download FOR<gwmw class="ginger-module-highlighter-mistake-type-3" id="gwmw-15584941994082396023890">.</gwmw><gwmw class="ginger-module-highlighter-mistake-type-1" id="gwmw-15584941994082041033536">mw</gwmw></a></p>
<p> </p>
<p> </p>
227124Wed, 22 May 2019 03:06:51 Z90091349009134Is there any example in maple/maple Sim on how to use maple in communication engineering applications
https://www.mapleprimes.com/questions/227123-Is-There-Any-Example-In-Maplemaple?ref=Feed:MaplePrimes:Unanswered Questions
<p>How may I please use maple tools in communication engineering applications. May I please have any example model</p>
<p>How may I please use maple tools in communication engineering applications. May I please have any example model</p>
227123Tue, 21 May 2019 23:25:06 ZMuazuMuazuExpectedValue Function
https://www.mapleprimes.com/questions/227102-ExpectedValue-Function?ref=Feed:MaplePrimes:Unanswered Questions
<p>I'm trying to use the ExpectedValue function to get the next close value of a stock.</p>
<p>restart; with(Finance)</p>
<p>W := WienerProcess()</p>
<p>T := 1.0</p>
<p>S := SamplePath(W(t), t = 0 .. T, timesteps = 100, replications = 10^4)</p>
<p>A := S[1 .. 10^4, 50]</p>
<p>TI := 1</p>
<p>AN := 100 (Start Value)</p>
<p>sigma := 3.5 (volatility)</p>
<p>r := 0.5e-1 (interest)</p>
<p>ANF := AN*exp((r-(1/2)*sigma^2)*TI+sigma*W(TI)) (ANF: is the forecasting Value)</p>
<p>ExpectedValue(ANF, timesteps = 100, replications = 10^3)</p>
<p>Is this approach right?</p>
<p>I'm trying to use the ExpectedValue function to get the next close value of a stock.</p>
<p>restart; with(Finance)</p>
<p>W := WienerProcess()</p>
<p>T := 1.0</p>
<p>S := SamplePath(W(t), t = 0 .. T, timesteps = 100, replications = 10^4)</p>
<p>A := S[1 .. 10^4, 50]</p>
<p>TI := 1</p>
<p>AN := 100 (Start Value)</p>
<p>sigma := 3.5 (volatility)</p>
<p>r := 0.5e-1 (interest)</p>
<p>ANF := AN*exp((r-(1/2)*sigma^2)*TI+sigma*W(TI)) (ANF: is the forecasting Value)</p>
<p>ExpectedValue(ANF, timesteps = 100, replications = 10^3)</p>
<p>Is this approach right?</p>
227102Sun, 19 May 2019 11:16:39 ZMatrix of P with the help of loop
https://www.mapleprimes.com/questions/227093-Matrix-Of-P-With-The-Help-Of-Loop?ref=Feed:MaplePrimes:Unanswered Questions
<p>How i can generate P<sub>r</sub> matrix when P<sub>r </sub>= -x and x<sub>0</sub>=-1 , x<sub>1</sub>=-2/3 , x<sub>2</sub>=-1/3 , and x<sub>3</sub>=0 with the help loop?<br>
<img src="/view.aspx?sf=227093_question/p.png"></p>
<p>How i can generate P<sub>r</sub> matrix when P<sub>r </sub>= -x and x<sub>0</sub>=-1 , x<sub>1</sub>=-2/3 , x<sub>2</sub>=-1/3 , and x<sub>3</sub>=0 with the help loop?<br>
<img src="/view.aspx?sf=227093_question/p.png"></p>
227093Sat, 18 May 2019 06:06:52 Zasma khanasma khanMaple 2018 won't open
https://www.mapleprimes.com/questions/227082-Maple-2018-Wont-Open?ref=Feed:MaplePrimes:Unanswered Questions
<p>Hello, i am experiencing some problems when trying to open the maple 2018 software*<br>
I have tried unistalling and download it again.<br>
I have tried to search for sollution but there is very ittle intel<br>
When i open Maple 2018 it just lingeres on the start up (pic below) and just disappears after 10 seconds</p>
<p>Can someone please help i have a very important examination upcoming</p>
<p><img src="/view.aspx?sf=210578_post/Udklip.PNG"></p>
<p>Hello, i am experiencing some problems when trying to open the maple 2018 software*<br />
I have tried unistalling and download it again.<br />
I have tried to search for sollution but there is very ittle intel<br />
When i open Maple 2018 it just lingeres on the start up (pic below) and just disappears after 10 seconds</p>
<p>Can someone please help i have a very important examination upcoming</p>
<p><img src="/view.aspx?sf=210578_post/Udklip.PNG" /></p>
227082Thu, 16 May 2019 07:48:57 ZGeorglouwGeorglouw