Backpropagation algorithm derivation

[Avinash_Maurya]

during derivation for dw, db and dz for different layers in n layer neural network I just get some time get confused with
a) In obtained result which matrix will be transposed/not transposed

b) where will be dot product and element-wise product

please throughly explain to me as this may trouble me lot in future, if there are some references regarding to this please share also.

[paulinpaloalto]

You need to have some background in matrix calculus, since that’s what is being done here. Here’s a thread with links to the derivations of back propagation and background info on matrix calculus.