title: Keras regression does not pass through the origin
body: <p>I am a beginner in machine learning and I want to predict a nonlinear regression with Keras in Python, but Keras cannot pass through the origin even if I have some train data (0,0).
  <a href="https://i.stack.imgur.com/yPk24.png" rel="nofollow noreferrer">Fail to predict (0,0)</a></p>
  <p>But if I add a lot more train data (0,0), Keras finally manage to pass through.
  <a href="https://i.stack.imgur.com/nwVhu.png" rel="nofollow noreferrer">Prediction passing through the origin</a></p>
  <p>However, I don't want to add those data manually in order to predict correctly the output.</p>
  <p>Is there a way to force Keras to pass through the origin?</p>