= [1.5, 4.5, 6.25];</p><pre class="codeinput">ts = [1.5, 4.5, 6.25];
<span class="comment">% dx = 0.05; dy = 0.05; dt = 0.0005;</span>
dx = 0.05; dy = 0.05; dt = 0.0005;
[u, X, Y] = solver_4_2_5(dx, dy, dt, ts);
</pre><img vspace="5" hspace="5" src="hw_4_2_5_01.png" alt=""> <img vspace="5" hspace="5" src="hw_4_2_5_02.png" alt=""> <img vspace="5" hspace="5" src="hw_4_2_5_03.png" alt=""> <h2>Code: Solver of Functionn<a name="5"></a></h2><pre class="language-matlab"><span class="keyword">function</span> [u, X_