• 0 Posts
  • 294 Comments
Joined 5 months ago
cake
Cake day: April 9th, 2024

help-circle
  • It should be easy, it’s just analysis but with an added dimension, basically. How is it so hard? How is it that the more I’m “learning” for that damn math exam the less I know? Why do I need it in the first place? Why have exams at all? I know what I know, and it’s not like I’m learning anything by preparing for them. I hate exams so much, it’s so stressful.

    I doubt you have the answers to that, even if you did, they wouldn’t really help. So let’s ask something useful, since you’re offering.

    What the hell is a total derivative, and why is it suddenly the same as a tangential plane?

    Why is the gradient just a collection of the first partial derivatives? How’s a tuple of them any useful? Apparently it’s showing the direction of steepest ascend or something? I don’t get it.

















  • The background is that certificate revocation is a broken system and having short lived certificates makes the problem go away. You don’t need to worry about how to tell people that some certificate is bad if it’s only valid for a few days.

    Ideally, certificates would only be valid for a few days, it should be automated anyway. This has other downsides as I can imagine, like creation of more traffic. My self signed CA for my home LAN has 4 days as standard, and it works perfectly fine.