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Find the equation of the tangent plane and normal line to the following surfaces at the...

Find the equation of the tangent plane and normal line to the following surfaces at the specified points:

1) x^2 + y^2 + z^2 = 16, (3, 2, √3)
2) x^2 + y^2 - z^2 = 9, (3, 1, 1)
3) z = √x + √y, (4, 9, 5)

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