title: Should I use tf.add or + to add two tensors in Tensorflow?
body: <p>I am using Tensorflow 2.0 for Python 3.</p>
  
  <p>Suppose I have two tensor variables, <code>x</code> and <code>y</code>, and I want to compute their element-wise sum <code>x + y</code>. Should I just write <code>x + y</code>, or <code>tf.add(x, y)</code>? If they are not equivalent, when should I use one or the other?</p>