title: How to solve the "Inner matrix dimensions must agree." in MATLAB but I do have made the dimensions the same
body: <p>I have been using MATLAB to finish some work but I have encountered some problem.
  MATLAB tells me that:</p>
  
  <pre><code>  Error using  * 
    Inner matrix dimensions must agree.
  
    Error in iterationHn (line 29)
    revisedFup=trVnew*Foldup*Vnew;
  </code></pre>
  
  <p>But I do have made sure that trVnew,Foldup,Vnew are both 8x8 double matrix.
  There is no dimension problem I think.
  So How can solve it?</p>
  
  <p>Thank you!</p>