If vec a , vec b , vec c are non-copla...

If ` vec a , vec b , vec c` are non-coplanar vector and `lambda` is a real number, then the vectors ` vec a+2 vec b+3 vec c ,lambda vec b+mu vec ca n d(2lambda-1) vec c` are coplanar when a. `mu in R` b. `lambda=1/2` c. `lambda=0` d. no value of `lambda`

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