What we're really trying to figure out is (33+37+41)/3
(33+37+41)=111
111/3=37
She can make 37 scarves
Answer:
For 9., the answer is x = -6
For 10., the answer is x = 6
For 11., the answer is x = -7
For 12., the answer is x = -6
Which of what? Where are the options?
The Lagrangian,
has critical points where its partial derivatives vanish:
tells us , so that
Then with , we get
and tells us
Then there are two critical points, . The critical point with the negative -coordinates gives the maximum value, .