+ oo Consider the improper integral dx . What will be an appropriate solution and answer? x2+ 2x+ 2 A lim Arctan (x- 1)l" = does not exist w- 00 元 B lim Arctan (x+ 1)l w- 00 lim Arctan (x + 1)l" 4 %3D w- 00 lim Arctan (x+ 1)| = - w- 00 E) none of the choices

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