If \[\mathbf{a}=2\mathbf{i}+2\mathbf{j}-\mathbf{k}\] and \[|x\,\mathbf{a}|\,\,=1,\] then x =

If \[\mathbf{a}=2\mathbf{i}+2\mathbf{j}-\mathbf{k}\] and \[|x\,\mathbf

1.	If \[\mathbf{a}=2\mathbf{i}+2\mathbf{j}-\mathbf{k}\] and \[\|x\,\mathbf{a}\|\,\,=1,\] then x =
A.	\[\pm \frac{1}{3}\]
B.	\[\pm \frac{1}{4}\]
C.	\[\pm \frac{1}{5}\]
D.	\[\pm \frac{1}{6}\]
Answer» B. \[\pm \frac{1}{4}\]

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If \[\mathbf{a}=2\mathbf{i}+2\mathbf{j}-\mathbf{k}\] and \[|x\,\mathbf{a}|\,\,=1,\] then x =

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