Lagrangian Formulation (SVM)

Check the following video at **28:25** ( I commonly see this comment in many other lectures)

[https://youtu.be/eHsErlPJWUU?t=1705](https://youtu.be/eHsErlPJWUU?t=1705)

**I have the following 2 questions**

1) The professor claims that we can replace the slack inequality with equality. He mentioned that he'd explain the interesting trick later (which is not captured in this video). Can any one explain it?

2) After converting it to the Lagrangian form, I understand why we're trying to minimize w and b (because our main objective itself …

datascience svm