Hi

Dear mentors/ fellows,

@ paulinpaloalto and @agpath

My question is related to Derivative Equations (Backpropagation Intuition),

I am confused about the dimension of dz[2] as it should be a row vector (1,m).

and how it is used to compute the dw[2] = dz[2] * a[1]T ?

as dz[2] – (1,m) dimensional row vector and

a[1] — (n[1],1) column vector

so how we could get dw[2] a column vector?