deletions | additions       diff --git a/Waveform optimization.tex b/Waveform optimization.tex  index 0525a30..20b9431 100644  --- a/Waveform optimization.tex  +++ b/Waveform optimization.tex 
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Next we want to take the derivative of this expression with respect to the components of $\Theta_{k}$ that defines the waveform and equate it to zero to find its maximum. As the second integral does not depend on the waveform, it can be neglected, as well as any multiplicative or additive factors that are independent of the waveform.  We can now expand the integral: integral over the hidden states:  $\idotsint \prod_j^N \prod_u^{T_j} dx_u^j \sum_i [ \sum_t (d_t^i - m(x_t^i))^2 ]P(X|D,\Theta_{k-1})$