こんにちは、ユウトさん よろしければ、この質問には英語でお答えします。
I understand that you would like to use the first argument ("A") of sequenceInputLayer as a unique activation function in functionLayer.
You may define a custom activation function which takes the input and applies the desired operation using the first column ('A') of the input. The output of this custom activation function is then used in the functionLayer as the unique activation function.
To learn more about this, please refer to the below documentation to implement a custom deep learning layer:
I hope this helps!
