What is the area bounded by y=[x], where [ ] is the greatest integer function, the x-axis and the lines x=-1 5 and x=-1 8?

NDA 2021 Mathematics question

What is the area bounded by , where is the greatest integer function, the -axis and the lines and ?

Answer: (C)

For , . So on the interval from to the curve is the horizontal line . The region bounded by it, the -axis and the two

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Question ID VK-033710