Learn how to calculate the derivative of the Cross Entropy function for Neural Networks and apply it to Backpropagation in this comprehensive video tutorial. Explore step-by-step explanations of dCE_setosa and dCE_virginica with respect to b3, other relevant derivatives, and the application of Cross Entropy in Backpropagation. Gain a deeper understanding of Neural Network concepts, building upon prior knowledge of backpropagation, multiple inputs and outputs, ArgMax, SoftMax, and Cross Entropy.