Question
यदि $A = \left[ {\begin{array}{*{20}{c}}3&2\\1&4\end{array}} \right]$, तो $A(adj\,A) = $
Aliter : $A\,(adj\,A) = |A|I = 10{\rm{ }}\left[ {\begin{array}{*{20}{c}}1&0\\0&1\end{array}} \right] = \left[ {\begin{array}{*{20}{c}}{10}&0\\0&{10}\end{array}} \right]$.
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| $X_i$ | $0$ | $1$ | $2$ | $3$ | $4$ | $5$ |
| $f_i$ | $k+2$ | $2k$ | $K^{2}-1$ | $K^{2}-1$ | $K^{2}-1$ | $k-3$ |
जहाँ $\sum \mathrm{f}_{\mathrm{i}}=62$ है, का माध्य $\mu$ तथा मानक विचलन $\sigma$ हैं। यदि $[\mathrm{x}]$ महत्तम पूर्णांक $\leq \mathrm{x}$ है, तो $\left[\mu^2+\sigma^2\right]$ बराबर है