How to get the bottom two equation? base on what rule? should the partial derivative respect to
Fantastic news! We've Found the answer you've been seeking!
Question:
![image text in transcribed](https://s3.amazonaws.com/si.experts.images/answers/2024/06/666ea4dd90361_197666ea4dd7d385.jpg)
How to get the bottom two equation? base on what rule? should the partial derivative respect to y is 1/2 y power to -1/2? and why it equal to 0?
![image text in transcribed](https://s3.amazonaws.com/si.experts.images/answers/2024/06/666ea4dddb11c_197666ea4ddc4893.jpg)
Posted Date: