Question

http://www.picresize.com/images/rsz_image-1.jpg
I know it's not 3 or 6. I can't figure this out.

Answer 1

It is simpler than what you think it is.
When I glanced at this question, I also flipped out a bit, but all they are asking you is :

is the x-coordinate of point P positive or negative?
is the y-coordinate of point P positive or negative?

(basically)

it is a piece wise question lol

Answer 2

" x-coordinate is positive " is denoted as \(\large\color{blue}{ f_x>0 }\)

" x-coordinate is negative " is denoted as \(\large\color{blue}{ f_x<0 }\)

" y-coordinate is positive " is denoted as \(\large\color{blue}{ f_y>0 }\)

" y-coordinate is negative " is denoted as \(\large\color{blue}{ f_y<0 }\)

Answer 3

For sure not 1 or 4, because \(\large\color{blue}{ f_x=0 }\) means that the x-coordinate is zero, saying that point P is on the y-axis, but it is not, and you can see that it's not.

Answer 4

its talking about the first partial derivative in terms of x and y of a multivariable function \[f(x,y)\]

Answer 5

the graph is a contour map of f(x,y)

Answer 6

ohh.... I thought... I am so dumb

Answer 7

so what is the answer?

Answer 8

If I had the level curve.... agh, I suck.
can't help sorry and bye