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ID#6867 HSC Higher Math 1st MCQ (Dhaka 2023)

■ নিচের তথ্যের আলোকে ৪ ও ৫ নং প্রশ্নের উত্তর দাও :
A = $\begin{bmatrix} 2 & 3 \\ 1 & 5 \end{bmatrix}, B = \begin{bmatrix} 2 \\ 10 \end{bmatrix}$

A$^{-1}$ = কত?
ক) $\frac{1}{7} \begin{bmatrix} 5 & -1 \\ -3 & 2 \end{bmatrix}$
খ) $\frac{1}{7} \begin{bmatrix} 2 & -3 \\ -1 & 5 \end{bmatrix}$
গ) $\frac{1}{7} \begin{bmatrix} 5 & 1 \\ 3 & 2 \end{bmatrix}$
ঘ) $\frac{1}{7} \begin{bmatrix} 2 & 3 \\ 1 & 5 \end{bmatrix}$
Resource Details
Exam HSC
Subject Higher Math 1st paper
Chapter 1
Board Dhaka
Year 2023

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