Question:- Express (1,2,3) as a linear combination of (1,1,1),(2,-1,1) and (1,-2,5)
in V3(R).
Solution:- Let a1,a2,a3∊R such that
(1,2,3)=a1(1,1,1)+a2(2,-1,1)+a3(1,-2,5)……………………(a)
(1,2,3)=(a1,a1,a1)+(2a2,-a2,a2)+(a3,-2a3,5a3)
