The equation of the tangent at (1, 1) to the circle 2x2 + 2y2 - 2x - 5y + 3 = 0
a) 2x + y - 1 = 0 b) 2x - y-1=0 c) x + 2y - 1 = 0 d) 2x + y + 1 = 0
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