Level curves of f(x, y)are shown in the figure below.(Darker shades indicate regions with lower levels.)
Determine if $$f _ { y } ( 1,0 )$$ is positive, negative or zero.

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The Answer of Level curves of f(x, y)are shown in the figure below.(Darker shades indicate regions with lower levels.)
Determine if $$f _ { y } ( 1,0 )$$ is positive, negative or zero.

Level Curves of F(x, Y)are Shown in the Figure Below fy(1,0)f _ { y } ( 1,0 )fy​(1,0)

Level Curves of F(x, Y)are Shown in the Figure Below $f _ { y } ( 1,0 )$