(a) Find an equation of the tangent plane to the surface at the given point. z = x2 - y2, (7, 4, 33) (b) Find a set of symmetric equations for the normal line to the surface at the given point. x + 7 14 y + 4 - z + 33 -8 -1 Ox + 7 = y + 4 = z + 33 Ox - 7 = y - 4 = z - 33 O X 14 -8 -1 O X -7 - y – 4 - z - 33 y - 4 - z - 33 .1 14 -8

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