Which of the following equations is(are) true? 1 S xdx lim = ( Σ 2+ =1 1 I xdx = - 2 + -2 O None of them II only O Both I and II| I. II. 2 OI only n1x lim n48 *WI-WI - 3i n *) (²) 3(²-¹)) (²) n

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