ector x, vector y); -->
<p></p>
<p><code>vector</code> <strong><code>append_row</code></strong><code>(vector x, vector y)</code><br>
Concatenate vectors x and y of any size into another vector.</p>
<!-- vector; append_row; (real x, vector y); -->
<p></p>
<p><code>vector</code> <strong><code>append_row</code></strong><code>(real x, vector y)</code><br>
Append x to the top of y, returning another vector.</p>
<!-- vector; append_row; (vector x, real y); -->
<p></p>
<p><code>vector</code> <strong><code>append_r