n class="p">.</span><span class="n">eq</span><span class="p">.</span><span class="n">z</span><span class="p">.</span><span class="nb">and</span><span class="p">.</span><span class="n">almost</span><span class="p">(</span><span class="n">y</span><span class="p">,</span><span class="mi">10</span><span class="o">*</span><span class="nb">sin</span><span class="p">(</span><span class="mf">3.1416d0</span><span class="o">/</span><span class="mi">4</span><span class="n">d0</span><span class="p">),</span><span class