Join Sarthaks eConnect Today - Largest Online Education Community!
0 votes
in Mathematics by (63k points)

If a, b, c, are in A.P, then find the determinant of |(x + 2, x + 3, x + 2a), (x + 3, x + 4, x + 2b), (x + 4, x + 5, x + 2c)|

1 Answer

+1 vote
by (64.5k points)
selected by
Best answer

(using R2 → 2R2 − R1 − R3)

But a,b, c are in AP. Using 2b = a + c, we get

[Since, all elements of R2 are zero]

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.