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Definite Integration

WB JEE 2022

MCQ+1 / -0.252022

মনে কর \(\mathop {\lim }\limits_{ \in \to 0 + } \int\limits_ \in ^x {{{bt\cos 4t - a\sin 4t} \over {{t^2}}}dt = {{a\sin 4x} \over x} - 1,\left( {0 < x < {\pi \over 4}} \right)}\) । সেক্ষেত্রে a ও b এর মান হল

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