find all points on the surface z=x^3+3xy^2-15x-12y at which the tangent plane is horizontal?

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2006-06-24 14:31:01 · 3 answers · asked by cutie_2116 1 in Education & Reference ➔ Homework Help

Horizontal to what?

2006-06-24 14:50:39 · answer #1 · answered by theFo0t 3 · 0⤊ 0⤋

You are too damn smart for this site

2006-06-24 14:54:17 · answer #2 · answered by Anonymous · 0⤊ 0⤋

waht they said

2006-06-24 15:02:47 · answer #3 · answered by ..// wiinter ]] 3 · 0⤊ 0⤋