Can this function be used to activate?

Question

Neural networks

There is, for example, a sample that says that people of one age play football, but not another. Those who are less than 30 years old (we don't know the threshold) play (desired value 1), and those who are older do not (desired value 0).
Is it possible to use the activation function f(x) = 1 - sigmoid(x) in this case?
sigmoid(x) = 1 / ( 1 + exp(-x))

Answer 1

There is no special meaning, because all linear coefficients will be taken into account in the last layer of the network.
Those. you can leave f (x) = sigmoid (x), then the network itself will learn that at the end it is necessary to multiply by -1 and add 1.