- #1
physphys
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Homework Statement
Find the point(s) on the parabola x= y^2-8y+18 closest to (-2,4)
Homework Equations
The Attempt at a Solution
Using the distance formula I found that d^2 = y^4 - 16y^3 + 105y^2 - 328y + 416
after differentiating I have 2d' = 4y^3 - 48y^2 + 210y -328
I'm not sure what to do now, or what I may have done wrong, any help is appreciated.
Thanks!