Question
यदि $A =\left[\begin{array}{lll}1 & 2 & x \\ 3 & -1 & 2\end{array}\right]$ तथा $B =\left[\begin{array}{c}y \\ x \\ 1\end{array}\right]$ ऐसे हैं कि $AB =\left[\begin{array}{l}6 \\ 8\end{array}\right],$ है, तो
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$\int_0^{\mathrm{t}^2}\left(\mathrm{f}(\mathrm{x})+\mathrm{x}^2\right) \mathrm{dx}=\frac{4}{3} \mathrm{t}^3, \forall \mathrm{t}>0$ है, तो $\mathrm{f}\left(\frac{\pi^2}{4}\right)$
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