The goal is to find the biggest slope in the diagramm or ?
I want to implement a fct to find rhe lr with the highest slope
Is that a good approach
And to even find a range low lr and high lr is even better for training purposes or
PS I hope the questions is not to baddly written, please it is my first question in this forum 
Again how to get a better technique to find the right lr and is it better to train with a range or just a single lr value
in advanced thanks for your help BIG FAN OF FASTAI