>'t = %.2f'</span>, id * dt));
    mesh(X_, Y_, u);
    view(3); xlabel(<span class="string">'x'</span>); ylabel(<span class="string">'y'</span>); zlabel(<span class="string">'u(numerical)'</span>);
<span class="keyword">end</span>
</pre><p class="footer"><br><a href="http://www.mathworks.com/products/matlab/">Published with MATLAB&reg; R2015b</a><br></p></div><!--
##### SOURCE BEGIN #####
%% HW 4.2.5
%% Initial-boundary-value Problem
% * $v_t = \nu (v_{xx} + v_{yy}) + F(x, y, t), (x, y) \in R, t > 0$
% * $