title: Can't np.array.dot(np.array())
body: <p>Good evening, where is the problem?</p>
  <pre><code>F = FUN(X0)
  J = jacobian(X0)
  X1 = X0 - F.dot(np.linalg.inv(J))
  </code></pre>
  <p>where
  X0 is:</p>
  <pre><code>[[1]
   [1]]
  </code></pre>
  <p>F is</p>
  <pre><code>[[ 5]
   [-2]]
  </code></pre>
  <p>np.linalg.inv(J) is</p>
  <pre><code>[[0.125 0.375]
   [0.375 0.125]]
  </code></pre>
  <p>and in result I expect</p>
  <pre><code>[[first_value]
  [sec_value]]
  </code></pre>
  <p>Thank you</p>