Question: (4) (6 marks) The relationship between r and y is implicitly defined by the equation, sec (r + y) = tan (y - x) .

(4) (6 marks) The relationship between r and y is implicitly defined by the equation, sec (r + y) = tan (y - x) . (a) Determine- dy d.x (b) Find an equation for the line which lies tangent to the curve sec (r + y) = tan (y - x) at the point (-3' 3)

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