Find an equation of the planes tangent to the given surfaces

Reference no: EM131006094

Find an equation of the planes tangent to the following surfaces at given points,

a. x² - 2y² + z² / 4 = 3, at (√2, 0, 2).

b. z = xy - 25 at (1, 16, -9).

Reference no: EM131006094

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