Tried taking the log and then derivative of this equation, is this correct?

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$$\prod_i \frac{\prod_j\exp(a_{ij}\theta- \delta_{ij})}{\sum_h\exp(a_{ih}\theta- \delta_{ih})}$$

Taking log

$$\sum_i\sum_j {(a_{ij}\theta- \delta_{ij})}-{\sum_i\log\sum_h\exp(a_{ih}\theta- \delta_{ih})}$$

Derivative with respect to $\theta$

$$\sum_i\sum_j {(a_{ij})}-{\sum_i\frac{(a_{ih}\exp((a_{ih}\theta- \delta_{ih}))}{\sum_h\exp(a_{ih}\theta- \delta_{ih})}}$$