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JEE MATHEMATICS MCQ: DEFINITE INTEGRATION

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Application +4 | -1
Consider the integral
l = ∫010[x]e[x]ex−1dxl\, = \,\int\limits_0^{10} {\frac{{\left[ x \right]{e^{\left[ x \right]}}}}{{{e^{x - 1}}}}} \mathrm{ }dx, Where [x][x] denotes the greatest integer less than or equal to xx. Then, the value of ll is equal to
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Correct option: C
45(e−1)45\left( {e-1} \right)
Option C (45(e−1)45(e-1)) is correct because the integral can be simplified by breaking it into intervals and using the properties of the greatest integer function.

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