Consider the function f(r, y) = e=² sin( q² + y²) (a) ) Compute the gradient of f. (b) 1 ) Find the equation of the tangent plane at the point at the point (0, a /3, v3/2). (c :) Find a parametric equation for the line that is perpendicular to the graph of f at the point (0, 7/3, v3/2).

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