JEE Main 2018 — Matrices Question with Solution
JEE Main 2018 (15 Apr Shift 2 Online)
Question
Suppose is any non-singular matrix and , where and . If , then is equal to
Choose an option
Show full solutionCorrect option: A
Correct answer
A8
Step-by-step explanation
We have
Multiplying both sides by , we get;
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This is a previous-year question from JEE Main 2018, covering the Matrices chapter of Mathematics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.