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B
4≤I≤2√30
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C
√38≤I≤√26
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D
1≤I≤2√3√2
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Solution
The correct option is C√38≤I≤√26 I=∫π3π4sinxxdx sinxx is a decreasing function in given interval difference of limits =π3−π4=π12 so, π12⋅sinπ3π3≤I≤π12⋅sinπ4π4 √38≤I≤√26