1<h1>Results</h1> 2 3As in step-16, the solution looks like this on the finest mesh: 4 5<p align="center"> 6 <img src="https://www.dealii.org/images/steps/developer/step-16.solution.png" alt=""> 7</p> 8 9The output is formatted in a slightly different way compared to step-16 but is 10functionally the same and shows the same convergence properties: 11<pre> 12DEAL::Cycle 0 13DEAL:: Number of active cells: 20 14DEAL:: Number of degrees of freedom: 25 (by level: 8, 25) 15DEAL:cg::Starting value 0.510691 16DEAL:cg::Convergence step 6 value 4.59193e-14 17DEAL::Cycle 1 18DEAL:: Number of active cells: 44 19DEAL:: Number of degrees of freedom: 55 (by level: 8, 25, 45) 20DEAL:cg::Starting value 0.440678 21DEAL:cg::Convergence step 8 value 1.99419e-13 22DEAL::Cycle 2 23DEAL:: Number of active cells: 86 24DEAL:: Number of degrees of freedom: 105 (by level: 8, 25, 69, 49) 25DEAL:cg::Starting value 0.371855 26DEAL:cg::Convergence step 9 value 1.13984e-13 27DEAL::Cycle 3 28DEAL:: Number of active cells: 170 29DEAL:: Number of degrees of freedom: 200 (by level: 8, 25, 77, 174) 30DEAL:cg::Starting value 0.318967 31DEAL:cg::Convergence step 9 value 2.62112e-13 32DEAL::Cycle 4 33DEAL:: Number of active cells: 332 34DEAL:: Number of degrees of freedom: 388 (by level: 8, 25, 86, 231, 204) 35DEAL:cg::Starting value 0.276534 36DEAL:cg::Convergence step 10 value 1.69562e-13 37DEAL::Cycle 5 38DEAL:: Number of active cells: 632 39DEAL:: Number of degrees of freedom: 714 (by level: 8, 25, 89, 231, 514, 141) 40DEAL:cg::Starting value 0.215300 41DEAL:cg::Convergence step 10 value 6.47463e-13 42DEAL::Cycle 6 43DEAL:: Number of active cells: 1202 44DEAL:: Number of degrees of freedom: 1332 (by level: 8, 25, 89, 282, 771, 435, 257) 45DEAL:cg::Starting value 0.175848 46DEAL:cg::Convergence step 10 value 1.80664e-13 47DEAL::Cycle 7 48DEAL:: Number of active cells: 2288 49DEAL:: Number of degrees of freedom: 2511 (by level: 8, 25, 89, 318, 779, 1420, 829, 30) 50DEAL:cg::Starting value 0.136724 51DEAL:cg::Convergence step 11 value 9.73331e-14 52</pre> 53