吴恩达深度学习1-4(Build your neural network step by step) L_model_backword 函数
有些博客解析有误,原有的注释已经很清晰,修改如下:#GRADEDFUNCTION:L_model_backwarddefL_model_backward(AL,Y,caches):"""Implementthebackwardpropagationforthe[LINEAR->RELU]*(L-1)->LINEAR->SIGMOIDgroupArguments:AL--probabilityvec