[" *39.If a,b,c be any three non-zero,non-coplanar "],[" vectors,then find the linear relation between the "],[" following four vectors: "],[qquad [" a "-2b+3c,2a-3b+4c,3a-4b+5c],[7a-11b+15c]]

If vec a,vec b and vec c are three non-zero non-coplanar vetors,then find the linear relation between the following four vectors: vec a-2vec b+3vec c,2vec a-3vec b+4vec c,3vec a-4vec b+5vec c,7vec a-11vec b+15vec c

If a,b,c are three non-coplanar vectors, then 3a-7b-4c,3a-2b+c and a+b+lamdac will be coplanar, if lamda is