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en-us2017 Maplesoft, A Division of Waterloo Maple Inc.Maplesoft Document SystemMon, 29 May 2017 13:26:56 GMTMon, 29 May 2017 13:26:56 GMTMaple Questions and Posts on MaplePrimeshttp://www.mapleprimes.com/images/mapleprimeswhite.jpgMaplePrimes - Maple Posts and Questions
http://www.mapleprimes.com/tags/Maple
How can I restrict the parameters for the solution of an equation?
http://www.mapleprimes.com/questions/221998-How-Can-I-Restrict-The-Parameters-For?ref=Feed:MaplePrimes:Tagged With Maple
<p> </p>
<p> Assume that one has an equation P(a,b,c,d,e,f)=0. How do we solve this equation so that the parameters b and c are in terms of a, and the parameters d and e in terms of f?</p>
<p> </p>
<p> Assume that one has an equation P(a,b,c,d,e,f)=0. How do we solve this equation so that the parameters b and c are in terms of a, and the parameters d and e in terms of f?</p>
221998Mon, 29 May 2017 12:28:14 Zgurasguraslinearalgebra,equation
http://www.mapleprimes.com/questions/221997-Linearalgebraequation-?ref=Feed:MaplePrimes:Tagged With Maple
<p>hello . how can i get 7 given parameters(b1,a1,b1,a2,b2,.....) in this equation with maple. thanks</p>
<p> </p>
<p> </p>
<p><img src="/view.aspx?sf=221997_question/11.jpg"></p>
<p> </p>
<p><a href="/view.aspx?sf=221997_question/1.mw">1.mw</a></p>
<p>hello . how can i get 7 given parameters(b1,a1,b1,a2,b2,.....) in this equation with maple. thanks</p>
<p> </p>
<p> </p>
<p><img src="/view.aspx?sf=221997_question/11.jpg"></p>
<p> </p>
<p><a href="/view.aspx?sf=221997_question/1.mw">1.mw</a></p>
221997Mon, 29 May 2017 11:16:48 Zkambiz1199kambiz1199Transform arbitrary ODE system into first order form
http://www.mapleprimes.com/questions/221996-Transform-Arbitrary-ODE-System-Into?ref=Feed:MaplePrimes:Tagged With Maple
<p>Imagine we have an ODE system </p>
<p>odeSys := {diff(x(t),t$2)+diff(x(t),t)+x(t)=f(t),diff(y(t),t$2)+2*diff(y(t),t)+3*y(t)=g(t)};</p>
<p>It is easy to transform this system into a first order form by hand. But for larger systems, the procedure by hand becomes very error prone. Is there an intelligent way to transform a system of n scalar ODEs (order m) into a first order system? I know that the first order form is not unique. It is only important to reduce the system to a system of first order equations.</p>
<p> </p>
<p>Imagine we have an ODE system </p>
<p>odeSys := {diff(x(t),t$2)+diff(x(t),t)+x(t)=f(t),diff(y(t),t$2)+2*diff(y(t),t)+3*y(t)=g(t)};</p>
<p>It is easy to transform this system into a first order form by hand. But for larger systems, the procedure by hand becomes very error prone. Is there an intelligent way to transform a system of n scalar ODEs (order m) into a first order system? I know that the first order form is not unique. It is only important to reduce the system to a system of first order equations.</p>
<p> </p>
221996Mon, 29 May 2017 11:11:18 ZMrYouMathMrYouMathNew at maple - How to solve equations with RootOf / _Z?
http://www.mapleprimes.com/questions/221995-New-At-Maple--How-To-Solve-Equations?ref=Feed:MaplePrimes:Tagged With Maple
<p>Hi,</p>
<p>this forum has helped me a lot since I'm quite new at maple. There are lot of questions about the solution of _Z in roots but I still can't figure it out.</p>
<p>Here my problem:</p>
<p>f(x,y)= x*y - (V^(alpha)*W)/(V-a*x-b*y)^alpha</p>
<p>x>0, y>0, alpha>0, V>0, W>0 and V-a*x-b*y>0</p>
<p>I need to find the maximum values for x and y. But all the solutions have got _Z. How can I eliminate that? Thanks!</p>
<p>Best regards,</p>
<p>Won</p>
<p> </p>
<p>Hi,</p>
<p>this forum has helped me a lot since I'm quite new at maple. There are lot of questions about the solution of _Z in roots but I still can't figure it out.</p>
<p>Here my problem:</p>
<p>f(x,y)= x*y - (V^(alpha)*W)/(V-a*x-b*y)^alpha</p>
<p>x>0, y>0, alpha>0, V>0, W>0 and V-a*x-b*y>0</p>
<p>I need to find the maximum values for x and y. But all the solutions have got _Z. How can I eliminate that? Thanks!</p>
<p>Best regards,</p>
<p>Won</p>
<p> </p>
221995Mon, 29 May 2017 07:18:59 ZLeinegoldLeinegoldError, (in casesplit/K) this version of casesplit is not yet handling the function: piecewise
http://www.mapleprimes.com/questions/221994-Error-in-CasesplitK-This-Version?ref=Feed:MaplePrimes:Tagged With Maple
<p>I am learning pdsolve in Maple. When I try to solve a diffusion pde, I get this strange error message, and I do not understand what it means: This is using Maple 2017 on windows 7</p>
<pre class="prettyprint">
restart;
bc:=f(t,0)=0,f(t,1)=1;
ic:=f(0,x)=piecewise(x=0,1,0);
pde:=diff(f(t,x),t)=diff(f(t,x),x$2);
pdsolve({pde,bc,ic},f(t,x));
</pre>
<p>The error is</p>
<p>Error, (in casesplit/K) this version of casesplit is not yet handling the function: piecewise</p>
<p>Am I writing the initial conditions (ic) wrong? Maple help shows nothing on this. I think Maple does not like my initial conditions. But do not know how to correct it now.</p>
<p>What causes this error?</p>
<p> </p>
<p> </p>
<p>I am learning pdsolve in Maple. When I try to solve a diffusion pde, I get this strange error message, and I do not understand what it means: This is using Maple 2017 on windows 7</p>
<pre class="prettyprint">
restart;
bc:=f(t,0)=0,f(t,1)=1;
ic:=f(0,x)=piecewise(x=0,1,0);
pde:=diff(f(t,x),t)=diff(f(t,x),x$2);
pdsolve({pde,bc,ic},f(t,x));
</pre>
<p>The error is</p>
<p>Error, (in casesplit/K) this version of casesplit is not yet handling the function: piecewise</p>
<p>Am I writing the initial conditions (ic) wrong? Maple help shows nothing on this. I think Maple does not like my initial conditions. But do not know how to correct it now.</p>
<p>What causes this error?</p>
<p> </p>
<p> </p>
221994Sun, 28 May 2017 23:15:01 ZnmnmFind the candidates to absolute maximum and minimum with multiple constraints
http://www.mapleprimes.com/questions/221993-Find-The-Candidates-To-Absolute-Maximum?ref=Feed:MaplePrimes:Tagged With Maple
<p>Hello.</p>
<p>I am asked to find all the candidate points to absolute maximum or minimum in a domain delimited by several lines or curves.</p>
<p>Let me show you an example:</p>
<p><img src="/view.aspx?sf=221993_question/Captura1.png"></p>
<p>I am having trouble trying to find the candidate points on the boundary of the domain with LagrangeMultipliers.</p>
<p>How should I express the line or curve equations so that I can use them as constraints of LagrangeMultipliers? Should I use another method?</p>
<p>Thanks a lot.</p>
<p>Hello.</p>
<p>I am asked to find all the candidate points to absolute maximum or minimum in a domain delimited by several lines or curves.</p>
<p>Let me show you an example:</p>
<p><img src="/view.aspx?sf=221993_question/Captura1.png"></p>
<p>I am having trouble trying to find the candidate points on the boundary of the domain with LagrangeMultipliers.</p>
<p>How should I express the line or curve equations so that I can use them as constraints of LagrangeMultipliers? Should I use another method?</p>
<p>Thanks a lot.</p>
221993Sun, 28 May 2017 10:05:42 Zmagiblotmagiblot