at 4:30 in the video , how we can say de/db = de/dc * dc/db? Please if you can explain?
Doubt in video at 4:21
Hey @saksham_thukral
The reason we can do that is because of the Chain Rule of Derivatives.
The chain rule basically states that the derivative of f(g(x)) is f’(g(x)) ⋅ g’(x). In other words, it helps us differentiate composite functions (function applied on another function).
To know more, I highly recommend this series from Khan Academy.
Hope this helps!
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