title: how to manipulate a variable that store multiple numpy array
body: <p>I am new to python and I want to implement the algorithm in matlab using python as i found the solution from here: <a href="https://stackoverflow.com/questions/33559946/numpy-vs-mldivide-matlab-operator">Numpy vs mldivide,&quot;\&quot; matlab operator</a></p>
  <p>When I print the shape of the sol variable I got:</p>
  <p>(3, 1)
  (3, 1)
  (3, 1)</p>
  <p>Here is the answer of sol variable:</p>
  <pre><code>[[-1. ]
   [ 4.5]
   [ 0. ]]
  
  [[ 8.]
   [ 0.]
   [ 6.]]
  
  [[ 0.        ]
   [ 4.        ]
   [ 0.66666667]] 
  </code></pre>
  <p>My desire answer:</p>
  <pre><code>[[ 0.        ]
   [ 4.        ]
   [ 0.66666667]]
  </code></pre>
  <p>How can I select the last numpy-array as it is the solution I need as it is the solution of matlab. Thanks before hand!</p>