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{:[ vec(u),=(:1","-3","-2:),2u=(:2","-6","-4:)],[ vec(v)=,(:4","-5","3:),3v=(:12","-15","9:)],[2u-3v,=(:2","-6","-4:)-(:12","-15","9:)],[2u-3v,=(:-10","-6-(-15:)","-4-9:)],[,=(:-10","9","-13:)]:}(b){:[(u+v)- hat(ȷ)=(u+v)-(:0","1","0:)=(:5","-8","1:)-(:0","1","0:)],[(u+v)- hat(ȷ)=(:5","-9","1:)]:}(c){:[P=(:-7","5","- ... See the full answer