just checking the derivative

python/energy_flow_proper/03_gaussian/laplace_sage.org

@@ -318,3 +318,15 @@ t\right)}}{C_{m} + W_{l}} + \frac{1}{C_{m} + W_{l}}\]
 #+end_src
 
 #+RESULTS:
+
+#+begin_src jupyter-python
+  var('t, wc')
+  %display latex
+  diff(1/pi * (wc/(1+I*wc*t))^2, t)
+#+end_src
+
+#+RESULTS:
+:RESULTS:
+\[\newcommand{\Bold}[1]{\mathbf{#1}}-\frac{2 i \, \mathit{wc}^{3}}{\pi
+{\left(i \, t \mathit{wc} + 1\right)}^{3}}\]
+:END: