From 2c71c67d887f2d485caf069ac510d1266838bd4a Mon Sep 17 00:00:00 2001
From: Lars kleyn Winkel <l.kleynwinkel@student.tudelft.nl>
Date: Thu, 13 Feb 2020 13:51:15 +0000
Subject: [PATCH] Update src/8_many_atoms_sol.md

---
 src/8_many_atoms_sol.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/8_many_atoms_sol.md b/src/8_many_atoms_sol.md
index dfe0c65c..9648cb9d 100644
--- a/src/8_many_atoms_sol.md
+++ b/src/8_many_atoms_sol.md
@@ -17,7 +17,7 @@ pi = np.pi
 
 ### Subquestion 1
 
-Accoustic branch corresponds with (-) in the equation given in the lecture notes. Use the small angle approximation $\sin(k) \approx k$ to ease calculations. For the Taylor polynomial take $\omega^2 = f(x) \approx f(0) + f'(0)k + f''(0)k^2$ (some terms vanish, computation is indeed quite tedious). You should find: $$|v_g| = \sqrt{\frac{\kappa a^2}{2(m_a+m_2)}}$$
+Accoustic branch corresponds with (-) in the equation given in the lecture notes. Use the small angle approximation $\sin(x) \approx x$ to ease calculations. For the Taylor polynomial take $\omega^2 = f(x) \approx f(0) + f'(0)k + f''(0)k^2$ (some terms vanish, computation is indeed quite tedious). You should find: $$|v_g| = \sqrt{\frac{\kappa a^2}{2(m_a+m_2)}}$$
 
 ### Subquestion 2
 
-- 
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