- #1
Guero
- 15
- 0
we're doing partial derivatives, and i thought i understood them until:
[tex]f(x,y)=-x^2-y^2-10xy+4y-4x+2 [/tex]
we are meant to find and classify all local extrema. i got:
[tex]f_x=-2x-10y-4 [/tex] and [tex] f_y=-2y-10x+4[/tex]
i've never had two variables at this stage, and i can't solve for any of the points. the text doesn't seem to say anything about this...
[tex]f(x,y)=-x^2-y^2-10xy+4y-4x+2 [/tex]
we are meant to find and classify all local extrema. i got:
[tex]f_x=-2x-10y-4 [/tex] and [tex] f_y=-2y-10x+4[/tex]
i've never had two variables at this stage, and i can't solve for any of the points. the text doesn't seem to say anything about this...