Let $f ( x , y ) = 3 y ^ { 2 } + 2 x y$

question 5

Essay

Let $f ( x , y ) = 3 y ^ { 2 } + 2 x y$ Use the appropriate partial derivative to find the slope of the cross-section at the given point.
(a)The cross-section f(x, 2)at the point (3, 2).
(b)The cross-section f(1, y)at the point (1, -2).

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