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| -rw-r--r-- | Fourier Series.page | 2 |
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} |