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at 6:09 and 6:36 : the multiplicative factor 1/2 is missing / at 9:21: 3*y^3
Yes...sadly another of the many mistakes in his video's. Math cannot be hurried.
It was a very thorough explanation. The note about when to use partial notation and usual derivative notation at 5:28 was a nice touch. Thanks!
The partial derivative wrt to x is supposed to have two at the denominator. Which should cancel one of the twos. Same thing for y.
at 6:09 and 6:36 : the multiplicative factor 1/2 is missing / at 9:21: 3*y^3
Yes...sadly another of the many mistakes in his video's. Math cannot be hurried.
It was a very thorough explanation. The note about when to use partial notation and usual derivative notation at 5:28 was a nice touch. Thanks!
The partial derivative wrt to x is supposed to have two at the denominator. Which should cancel one of the twos. Same thing for y.