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| -rw-r--r-- | Fourier Series.page | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/Fourier Series.page b/Fourier Series.page index 6c9d563..2f12fb1 100644 --- a/Fourier Series.page +++ b/Fourier Series.page @@ -31,11 +31,11 @@ $$\begin{array}{ccl} Based on the double angle formula, -$\qquad\sin(3x) = 3\sin(x) - 4\sin^3(x)$ +$$\sin(3x) = 3\sin(x) - 4\sin^3(x)$$ Rearranging, -$\qquad\sin^3(x) = \frac{3\sin(x)-\sin(3x)}{4}$ +$$\sin^3(x) = \frac{3\sin(x)-\sin(3x)}{4}$$ Substituting back in the former equation, we get |