擅长:python、mysql、java
<p>根据上述评论和<a href="https://github.com/sympy/sympy/issues/14741" rel="nofollow noreferrer">https://github.com/sympy/sympy/issues/14741</a>,在Sympy中完成上述操作的一种方法是:</p>
<pre><code>from sympy import Eq, var
var('P, F, K, M, E0, E1, E2, E3, E4')
a = Eq(E1, (E0 + P - F)*K - M)
b = Eq(E2, (E1 + P - F)*K - M)
c = Eq(E3, (E2 + P - F)*K - M)
d = Eq(E4, (E3 + P - F)*K - M - F)
d.subs(*c.args).subs(*b.args).subs(*a.args)
</code></pre>