0 votes
27 views
in Matrices & determinants by (15 points)
If \( A=\left[\begin{array}{cc}5 a & -b \\ 3 & 2\end{array}\right] \) and \( A \cdot \operatorname{adj} A=A \cdot A^{T} \) then \( 5 a+b \)

Please log in or register to answer this question.

1 Answer

0 votes
by (20.7k points)

5a=2
b=3

Now,
5a+b=2+3=5

Related questions

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

...