4:30 "You would use its inverse, which very unimaginably is named..." "Sine inverse" Had me laughing out loud! I'm going to have to use that when I teach.
When you talk about inverse functions you assume that it exists (true for bijective functions). But there are surjective functions where the inverse relation for one image element returns a set of size greater one so there's no such thing as an inverse function.
At the end of the video you mention that symmetric keys aren't used today, but that's wrong. Our computers start with asymmetric encryption, but after that's established, then a symmetric key is transmitted, because symmetric encryption is faster than asymmetric. So we start with asymmetric, but then switch to symmetric. That's how web browsers communicate over SSL.
Best teacher
4:30 "You would use its inverse, which very unimaginably is named..." "Sine inverse" Had me laughing out loud! I'm going to have to use that when I teach.
When you talk about inverse functions you assume that it exists (true for bijective functions). But there are surjective functions where the inverse relation for one image element returns a set of size greater one so there's no such thing as an inverse function.
How do you crack the enigma machine?
what about diffie hellman
At the end of the video you mention that symmetric keys aren't used today, but that's wrong. Our computers start with asymmetric encryption, but after that's established, then a symmetric key is transmitted, because symmetric encryption is faster than asymmetric. So we start with asymmetric, but then switch to symmetric. That's how web browsers communicate over SSL.
W ha t class is this in hs?
I hope that this is in highschool because ill be in 9th grade this year and this is very interesting
I'm pretty sure it is a highschool maths class, I'm guessing somewhere between years 7-9 (Australian system)
@@johannarivers57 yeah we covered trig in yr 9 this year so I assume its for yr 9s- 10s