(a) Show that the surfaces intersect at the given point (b) Show that the surfaces have perpendicular...
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(a) Show that the surfaces intersect at the given point
(b) Show that the surfaces have perpendicular tangent planes at this point.
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x² + y² + z² + 2x - 4y - 4z - 12 = 0, 4x² + y² + 16z² = 24, (1, -2, 1)
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