- #1
Geometrick
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Homework Statement
You are at P(-1,1) on the surface z = (y-x^2)^3. What direction should you move from P so that your height remains the same?
Homework Equations
The Attempt at a Solution
So I basically do not want my height z to change. In this case, I will take a vector perpendicular to grad f(p), a simple computation shows that grad f(p) will be in the direction of <1,2>, so I take my direction v to be v = <-2, 1>.
I'm just wondering if this is correct?