- #1
grog
- 23
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Homework Statement
Find the equations of the tangent plane and the normal line to the given surface at the specified point.
xy+yz+zx=3 @ (1,1,1)
Homework Equations
z-z0=fx(x0,y0)(x-x0) + fy(x0,y0)(y-y0)
The Attempt at a Solution
I feel like this should be really easy, but I'm not sure how to get started. the equation from the book for the tangent plane seems to imply I should isolate z from the equation and go from there, but that seems like it would make things messy and more complicated than necessary.