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https://jjthetutor.com/u-120t10-1t010t-and-v-11t-1-1-t-1-1-t-r2-also-if-x-in-r3-has-coordinats-under-basis-u-find-coodinates-o-lx-under-basis/
U - [(1,2,0)T,(1,0,-1)T,(0,1,0)T] and V = [(1,1)T, (1,-1) T, (1,-1) T] R2 also if X in R3 has coordinats under basis U, find coodinates o L(x) under basis