3. }(1,0,0),\left(0, \frac{1}{\sqrt{2}}, \frac{1}{\sqrt{2}}\right),(0,0,1) 4 \cdot\left(\frac{1}{\sqrt{6}}, \frac{1}{\sqrt{6}},-\frac{2}{\sqrt{6}}\right),\left(\frac{1}{\sqrt{2}},-\frac{1}{\sqrt{2}}, 0\right) O 1,2,3, and 4 are all orthonormal 1 and 4 are orthonormal, 2 is orthogonal but not orthonormal, and 3 is not orthogonal ororthonormal O 1.2. and 4 are orthonormal, 3 is not orthogonal or orthonormal O 1 and 2 are orthonormal while 3 and 4 are not orthogonal or orthonormal

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