title: How can I label the graph axes?
body: <p>I have matlab code that plots a graph.</p>
  
  <pre><code>x=0:1:6076*25;
  w=7.8;
  [X,Z] = ode45(@(t,Z) sys(t,Z,w),x,[2000 tand(7.8)]);
  plot(X,Z(:,1),'r')  %Z(:,1) is z(x) and Z(:,2) is z'(x).
  </code></pre>
  
  <p>How can I label the axes? I'd like to label both the horizontal and the vertical axes.</p>
  
  <p><img src="https://i.stack.imgur.com/J03Bt.png" alt="enter image description here"></p>