JEE Main 2021 — Mathematics Algebra
Let A=[a1a2] and B=[b1b2] be two 2×1matrices with real entries such that A=XB, where X=31[11−1k], and k∈R. If a12+a22=32(b12+b22) and (k2+1)b22=−2b1b2, then the value of k is __________.
Held on 16 Mar 2021 · Verified 6 Jul 2026.
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