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Vector Algebra

JEE Main 2022 (Online) 25th June Morning Shift

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ধরি \({\vec a}\) এবং \({\vec b}\) ভেক্টরের মধ্যে কোণ \(\theta\), যেখানে \(|\vec a| = 4\), \(|\vec b| = 3\) এবং \(\theta \in \left( {{\pi \over 4},{\pi \over 3}} \right)\) পূর্ণচ্ছেদ তবে \({\left| {\left( {\vec a - \vec b} \right) \times \left( {\vec a + \vec b} \right)} \right|^2} + 4{\left( {\vec a\,.\,\vec b} \right)^2}\) সমান _________ .

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