An image is projected onto a wall, and the irradiance of the light on the wall is (3) given by f(x, y) = y*e2¤ Watts per square meter, where x, y are the numbers of meters from the center of the wall in the horizontal and vertical directions respectively. Find the linearization of f(x, y) about (0, 1), and then use it to approximate f(-0.05, 1.05).

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