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Let f(x) = x − [x], for every real number x, where [x] is the integral part of x.

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Let f(x) = x − [x], for every real number x, where [x] is the integral part of x. Then ∫ f (x) dx for f ∈ [-1,1)  is

(1) 1 

(2) 2 

(3) 0 

(4) 1/2

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Correct Option (1) 1

Explanation:

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