Doubt in formula at 4:42

#1

while differentiating J wrt y^, we should get y/y^ + (1-y)/(1-y^) but in the video, it is given as y/(1-y^) + (1-y)/(1-y^)

#2

hey @ishabehera,
Yes you are absolutely correct about this , and if you to further part of this video , you can see that bhaiya has made that correction too.

Thank You and Happy Learning :slightly_smiling_face:.