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-rw-r--r--Fourier Series.page2
1 files changed, 1 insertions, 1 deletions
diff --git a/Fourier Series.page b/Fourier Series.page
index 5b4a758..2456aad 100644
--- a/Fourier Series.page
+++ b/Fourier Series.page
@@ -19,7 +19,7 @@ $2.\quad\sin(2x)\cdot\cos(2x) = ?$
Based on the double angle formula,
-$\qquad\sin(2x) = 2\sin(x)\cos(x)$
+$$\qquad\sin(2x) = 2\sin(x)\cos(x)$$
Rearranging,
$$\begin{array}{ccl}