From 918bbfe89e6027cda678467721151a1d30ec5e2b Mon Sep 17 00:00:00 2001
From: Lars kleyn Winkel <l.kleynwinkel@student.tudelft.nl>
Date: Mon, 10 Feb 2020 15:46:58 +0000
Subject: [PATCH] Update src/7_tight_binding_model_sol.md

---
 src/7_tight_binding_model_sol.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/7_tight_binding_model_sol.md b/src/7_tight_binding_model_sol.md
index ca5067e8..6bb2210f 100644
--- a/src/7_tight_binding_model_sol.md
+++ b/src/7_tight_binding_model_sol.md
@@ -36,7 +36,7 @@ Group velocity is given as $v=\hbar^{-1}\frac{\partial E}{\partial k}$ with $E=\
 ```python
 pyplot.subplot(1,2,1)
 k = np.linspace(-pi/2+0.01, pi/2-0.01, 300)
-pyplot.plot(k, np.sin(k)/(np.sqrt(1-np.cos(k)));
+pyplot.plot(k, np.sin(k)/(np.sqrt(1-np.cos(k))));
 pyplot.xlabel('$k$'); pyplot.ylabel('$v(k)$');
 pyplot.xticks([-pi/2, 0, pi/2], [r'$-\pi/2$', 0, r'$\pi/2$']);
 pyplot.yticks([0, 1], [0, r'$2\sqrt{\frac{\kappa}{m}}$']);
-- 
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