擅长:python、mysql、java
<p>不能直接回答您的问题,但您可以使用<a href="http://sympy.org" rel="nofollow">Sympy</a>来解决此类问题:</p>
<pre><code>from IPython.display import display
import sympy as sy
sy.init_printing() # For LaTeX-like pretty printing in IPython
n = 5
A = sy.MatrixSymbol('A', 162, 240) # dimension 162x240
P = sy.MatrixSymbol('P', 162, 180) # dimensions 162x180
PTP = P*P.T
ex1 = (PTP.inverse() * PTP).inverse() * PTP.inverse() * PTP * A
display(ex1) # displays: A
</code></pre>