MATLAB How would you write this equation in MATLAB? (challenging)

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To calculate the global maximum of the mutual information function in MATLAB, the user needs to compute the gradient of the function based on the provided vectors P(x) and P(x|spike), referred to as A and B. Both A and B are 1-by-100 vectors. The discussion emphasizes the importance of correctly implementing the gradient calculation in MATLAB to achieve the desired outcome. Additional information or context about the mutual information function and its mathematical formulation may be necessary for more precise guidance on the implementation.
leealex0201
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Hello guys,

I would like to put this equation into the MATLAB to calculate the global maximum of mutual information function. In order to do that, I notice that I need a gradient of the function which is described as in attached files.

I do have the vector for P(x) and P(x|spike). Let's say they are called A and B respectively. Then, how do I write this down in MATLAB to calculate the gradient?

FYI, A and B are 1-by-100 vectors.
 

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