Solution: det (A) = −5, and for n×n matrix adj (A) has determinant (det A)^ (n−1). Here n = 3, so det (B) = (−5)^ (2) = 25.
The Mathematics section of the JEE Main 2026 exam is often the deciding factor in securing a top rank. Many students struggle with the vast syllabus, making it difficult to know where to focus their ...
gDepartment of Scientific Research Administration, Peking University Third Hospital, Beijing, China hDepartment of Cardiology and Institute of Vascular Medicine, Peking University Third Hospital, ...
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