9. If for real numbers x and y, f (x + iy) = u (x, y)...

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9. If for real numbers x and y, f (x + iy) = u (x, y) + iv (x, y) where u and v are functions of real variables, then what is at the point -1, )? Note that if you solved the last problem, then this can be done without explicitly computing u and v. 9. If for real numbers x and y, f (x + iy) = u (x, y) + iv (x, y) where u and v are functions of real variables, then what is at the point -1, )? Note that if you solved the last problem, then this can be done without explicitly computing u and v.