n><span class="p">(</span><span class="n">A_i</span><span class="p">,</span> <span class="n">b</span><span class="p">)</span><span class="o">.</span><span class="n">view</span><span class="p">(</span><span class="o">-</span><span class="mi">1</span><span class="p">,</span> <span class="mi">1</span><span class="p">),</span> <span class="n">temp</span><span class="p">)</span>

            <span class="n">resid</span> <span class="o">=</span> <span class="n">b</span> <span class="o">-</span> <span class="n">to