Mathematics - Vector Question with Solution | TestHub

Condition for given three vectors to be coplanar is $\left|\begin{array}{ccc}1& 2& 3\\ 0& \lambda & 4\\ 0& 0& 2\lambda -1\end{array}\right|=0\Rightarrow \lambda =0,1/2$ Hence given vectors will be non coplanar for all real values of $\lambda$ except $0,1/2$