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3 and 4 .Determinants and Matrices
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यदि $A = \left[ {\begin{array}{*{20}{c}}3&5\\2&0\end{array}} \right]$ और $B = \left[ {\begin{array}{*{20}{c}}1&{17}\\0&{ - 10}\end{array}} \right]$, तो $|AB|$ =
A
$80$
B
$100$
C
$-110$
D
$92$
Solution
चूँकि $A$ व $ B $ वर्ग आव्यूह है।
$\therefore $ $|AB|\, = |A||B|$; $|A|\, = – 10;|B| = – 10$
$\therefore $ $|AB|\, = 100$.
Standard 12
Mathematics
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