─────, ───────⎟
##            ⎝b₂ + x₁  b₂ + x₂  b₂ + x₃⎠
</code></pre>

<pre><code class="r">symbol_is_matrix(mu3)
</code></pre>

<pre><code>## [1] FALSE
</code></pre>

<pre><code class="r">mu1$pyobj
</code></pre>

<pre><code>## Matrix([[b1*x1/(b2 + x1)], [b1*x2/(b2 + x2)], [b1*x3/(b2 + x3)]])
</code></pre>

<pre><code class="r">mu2$pyobj
</code></pre>

<pre><code>## [b1*x1/(b2 + x1), b1*x2/(b2 + x2), b1*x3/(b2 + x3)]
</code></pre>

<pre><code class="r">mu3$pyobj
<