Neural network with multiples examples - Week 1

Hi, I am in Week 1 and I am going to do the programming assignment. My doubt during this week has been: how to treat multiples m examples to calculate the activation function (a) in each unit of layer (l)?

Hello @Yro, in course 2 week 1, there is a video called " Forward prop in a single layer" to demonstrate the calculation! Simplest way to think is, calculating m examples is to repeat the step of calculating 1 example m times, however, with the use of a technique called “vectorization” (which will also be covered in the same week), we achieve the same calculations for all examples in a more efficient manner than merely repeating them. It might sound difficult to understand my reply but I believe the videos will make it clear. There will also be a lab followed so you can practice it.