擅长:python、mysql、java
<p>最大值:</p>
<pre><code>powerseries((5*x+3)/(1-x^2),x,0);
</code></pre>
<p>退货</p>
<p><a href="https://i.stack.imgur.com/GKtfk.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/GKtfk.png" alt="powerseries_maxima_result"/></a></p>
<p>使用<code>part</code>提取生成器:</p>
<pre><code>part(''%,1);
(4-(-1)^i1)x^i1
</code></pre>
<p>和<code>coeff</code>得到系数:</p>
<pre><code>a(i1) := coeff(''%, x, i1);
[a(0), a(1), a(2)];
[3, 5, 3]
</code></pre>