Here An=[2n+1n−4n−2n+1]
⇒A15=[3115−60−29]
⇒A15+B=[22−11−11]
Now (A15+B)[xy]=[00]
⇒[22−11−11][xy]=[00]
⇒2x−11y=0⇒x=211y.
For y=2, x=11.
JEE Main 2026 — Mathematics Algebra
For the matrices A=[31−4−1] and B=[−29−134918], if (A15+B)[xy]=[00], then among the following which one is true?
Held on 21 Jan 2026 · Verified 6 Jul 2026.
x=5,y=7
x=18,y=11
x=11,y=2
x=16,y=3
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