The value of _0^ 2 [ 2x(1 + 3x)] ,dx, where [t] denotes the greatest integer function is:

JEE Main 2019 Mathematics question

The value of , where [t] denotes the greatest integer function is:

Answer: (D)

With the integrand f becomes −f, and except on a set of measure zero, so ,

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Question ID VK-009918