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JEE MATHEMATICS MCQ: FUNCTIONS

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Let g  (x)=∫0x  f(t)  dt\mathrm{g}\,\,\left( x \right) = \int \nolimits_0^x \,\,f\left( t \right)\,\,dt where 12  ≤  f(t)  ≤1,  t∈  [0,1]\frac{1}{2}\,\, \le \,\,f\left( t \right)\,\, \le 1,\,\,t \in \,\,\left[ {0,1} \right] and 0  ≤  f  (t)  ≤  120\,\, \le \,\,f\,\,\left( t \right)\,\, \le \,\,\frac{1}{2} for t  ∈  (1,2] t\,\, \in \,\,\left( {1,2} \right]\,, then
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Correct option: B
0  ≤  g  (2)<20\,\, \le \,\,\mathrm{g}\,\,\left( 2 \right) < 2
Option B (0≤g(2)<20 \le g(2) < 2) is correct because it provides the correct bounds for the integral based on the given inequalities for f(t).

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