Find the equation of the plane which is tangent to the graph

Reference no: EM131013712

Find the indicated equation.

a. Find the equation of the plane which is tangent to the graph of f(x, y) = 4 arctan (xy) at the point (x, y) = (1, 1).

b. Find the equation of the tangent plane to x + y + z = e^xyz at the point (0, 0, 1).

Reference no: EM131013712

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