title: How can I make parabolic curves in matplotlib?
body: <p>How can I make a graph like this with <code>matplotlib</code>?</p>
  <p><a href="https://imgur.com/a/27D9gpt" rel="nofollow noreferrer"><img src="https://i.imgur.com/u6v0CXO.jpeg" alt="" /></a></p>
  <p>At first, I thought it would just need to graph X and Y like</p>
  <pre><code>X = [1,2,3,4,5,6,7,8,9,10]
  Y = [10,9,8,7,6,5,4,3,2,1]
  </code></pre>
  <p>Then throw it up with <code>plt.plot(X, Y)</code> but clearly X and Y are relative(?) so it doesn't.</p>
  <p>I don't particularly care about having colours, like the colouring in the image.</p>