2n\omega_{m}t + \,\cdots -->

<img class="indented" src="pix/fmeq10.png" alt="cos B sin t">

<!-- LATEX \sin(B\sin\omega_{m}t)=2J_{1}(B)\sin\omega_{m}t+2J_{3}(B)\sin 3\omega_{m}t + \,\cdots\, + 2J_{2n-1}(B)\sin (2n-1)\omega_{m}t + \,\cdots -->
<img class="indented" src="pix/fmeq11.png" alt="sin B sin t">

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<p>Here the J's refer to the Bessel functions which we will return to later. 
First, let's finish this 
expansion; we take these two sums and 
<img src="pix/fmeq23.png" alt="wct">
and plu