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302: Exam 3 or Ch 13 Review - Shared screen with speaker view
Mike King
08:02
This one may of kind of specific but can you do one where we find a point in a plane that is closest to some other point outside of the plane?
Peter
08:54
yes
Mike King
16:21
Yes kinda
Braden Trejo
16:22
where did fxy come from
Peter
16:24
so right now we just have the critical point, right? We don't actually know if it's a min or max yet right?
Max Hansen
16:34
Yes this is helpful
Lexie Isbell
16:46
What would you do if you were trying to get close to a different point?
Braden Trejo
18:08
kind of
Braden Trejo
18:18
I was wondering why z is multiplied to y^2
Peter
19:47
yeah
Mike King
20:36
Could we also do like a maximization story problem?
Griffin Izu
20:42
^
Braden Trejo
24:32
I think it is positive x
Peter
24:49
Don't we need to test to find out if it's actually a minimum though?
Peter
26:32
Wouldn't the gradient also be zero at a maximum though?
Lexie Isbell
28:06
These x,y,z values don't add up to one
Peter
28:08
okay
Peter
33:51
got it
Lexie Isbell
38:48
Yeah that helps
Mike King
40:24
yes
Griffin Izu
40:27
ye
Griffin Izu
43:51
oh cause in 3d there’s 8 spaces
Griffin Izu
43:53
right
Jaymee Knutson
01:21:00
Hey guys! My prof emailed this link out for an exam review, is that what's going on, or are these regular office hours?
Jaymee Knutson
01:21:35
Okay, gotcha. Thanks!
Max Hansen
01:30:18
I believe that 1 in the answer because +-1 ,0 and 0<+-1 are critical points
Max Hansen
01:30:52
And if you plug it into f it is bigger than 2/3 so it is the max
Connor Moran
01:31:09
How do you get 0 and 1 as critical points??
Max Hansen
01:32:09
from x^2 =y^2
Max Hansen
01:32:40
Because x an and y can be both 1 and 0
Connor Moran
01:32:56
Ahhh ok thanks
Max Hansen
01:42:23
me