The surface z = x² - y² and the surface ryz = -30 intersect along a curve in R³. Find a vector tangent to this curve at the point P = (-3,2,5). Hint: such a vector is parallel to tangent planes at P to both surfaces.

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A: Direction ratio is = (6-0, 6-0)= (6,6) That is equivalent to (1,1) , (2,2) and (3,3)

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