Higher Secondary Question Paper Solution of Year 2015 Question No: A.1.(d)(ii)

যদি \(\overline a \) এবং \(\overline b\) এমন দুটি ভেক্টর যে \(\begin{vmatrix} \overline a \end{vmatrix} = 2, \begin{vmatrix} \overline b \end{vmatrix} = 3\) এবং \(\overline a . \overline b = 4,\) তাহলে \(\begin{vmatrix} \overline a - \overline b \end{vmatrix}\)-এর মান নির্ণয় করো

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