http://www.mapleprimes.com/questions/128403-How-Do-I--Do-An-Integration-Of-A-Function-Of-A-Depvariable en-us 2026 Maplesoft, A Division of Waterloo Maple Inc. Maplesoft Document System Sun, 14 Jun 2026 05:06:21 GMT Sun, 14 Jun 2026 05:06:21 GMT The latest answers and comments added to the Question, How do I do an integration of a function of a dep-variable(with 2 arguments) which I have solved numerically http://www.mapleprimes.com/images/mapleprimeswhite.jpg http://www.mapleprimes.com/questions/128403-How-Do-I--Do-An-Integration-Of-A-Function-Of-A-Depvariable http://www.mapleprimes.com/questions/128403-How-Do-I--Do-An-Integration-Of-A-Function-Of-A-Depvariable?ref=Feed:MaplePrimes:How do I do an integration of a function of a dep-variable(with 2 arguments) which I have solved numerically:Comments#answer128407 <p>You could try these,</p> <pre>evalf( Int( a*r^2*'Phi'(r,10)^2 + 2*b*r*'Phi'(r,10)^3, r=0..infinity ) ); evalf( Int( r -&gt; a*r^2*Phi(r,10)^2 + 2*b*r*Phi(r,10)^3, 0..infinity ) ); </pre> <p>See the <a href="http://www.maplesoft.com/support/help/Maple/view.aspx?path=evalf/Int">evalf/Int</a> help page for additional options for numerical quadrature (numeric integration).</p> <p>Could you add another equation to your original pde system, introducing a new term, the derivative (w.r.t r) of which is Phi(r,10)? ...or would it have to be Phi(r,t)? With the right BC, would solving that enhanced pde system provide a definite integral for Phi(r,10) w.r.t r?</p> <p>You could try these,</p> <pre>evalf( Int( a*r^2*'Phi'(r,10)^2 + 2*b*r*'Phi'(r,10)^3, r=0..infinity ) ); evalf( Int( r -&gt; a*r^2*Phi(r,10)^2 + 2*b*r*Phi(r,10)^3, 0..infinity ) ); </pre> <p>See the <a href="http://www.maplesoft.com/support/help/Maple/view.aspx?path=evalf/Int">evalf/Int</a> help page for additional options for numerical quadrature (numeric integration).</p> <p>Could you add another equation to your original pde system, introducing a new term, the derivative (w.r.t r) of which is Phi(r,10)? ...or would it have to be Phi(r,t)? With the right BC, would solving that enhanced pde system provide a definite integral for Phi(r,10) w.r.t r?</p> 128407 Tue, 06 Dec 2011 00:41:42 Z pagan pagan