<span class="fl">1</span> <span class="op">+</span> <span class="fu"><a href="https://rdrr.io/r/base/Log.html" class="external-link">exp</a></span><span class="op">(</span> <span class="va">theta</span><span class="op">[</span>,<span class="fl">1</span><span class="op">]</span> <span class="op">*</span> <span class="va">Q</span><span class="op">[</span><span class="va">ii</span>,<span class="fl">1</span><span class="op">]</span> <span class="op">-</span> <span class="va">b</span><span class="op">[</span><sp