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The value of the integral

∫ 1 { x2 + x2013/(x2 + 2IxI +1)}dx

-1

(1) positive

(2) negative

(3) zero

(4) infinite

dx is

1
the question is not clear... x2013 ?? what does it mean ? what is the expression in numerator... x square + x2013 or only x2013 ? use parentheses if required to clearly write the expression

it is x to the power 2013 and x square .. & limit of the integration is from 1 to -1 .. please help me

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