Question

Suppose f(x, y) = x^{2} + y^{2} - 4 x - 4 y + 2
What is the height of any relative minimum of f above the xy plane?

Answer 1

the plane i think they are asking for

Answer 2

I thought it was fyy= 2, but that's not it.

Answer 3

show ur problem that u had done.

Answer 4

gimme a sec

Answer 5

okay.

Answer 6

its labelled f

Answer 7

I drew a diagram of what i thought was a the sitaution, and used my notes to determine that i was solving for fyy, but that doesnt seem to be the case

Answer 8

its not clear.

Answer 9

i am not able to see yet.

Answer 10

highest quality i can get. sorry!

Answer 11

okay.

Answer 12

can u send me a formula.

Answer 13

fy=2y-4.

Answer 14

but i don't think this is the method i should be using

Answer 15

If I used D+fxx, I would get 6, but the right answer is -6.

Answer 16

show me remaining problem what u done.

Answer 17

type here

Answer 18

don't send attachment PLZ.

Answer 19

Well, method one is:
fyy=2

Answer 20

Method 2 is D+fxx=4+2=6

Answer 21

i am sorry i am not getting yet.

Answer 22

eh, ignore it. im good now