\left. \begin{array} { l } { \text { Solution of } | x + \frac { 1 } { x } | < 4 \text { is } } \\ { ( a ) ( 2 - \sqrt { 3 } , 2 + \sqrt { 3 } ) \cup ( - 2 - \sqrt { 3 } , - 2 + \sqrt { 3 } ) } \\ { ( b ) R - ( 2 - \sqrt { 3 } , 2 + \sqrt { 3 } ) } \\ { ( c ) R - ( - 2 - \sqrt { 3 } , - 2 + \sqrt { 3 } ) } \end{array} \right.

\left. \begin{array} { l } { \text { Solution of } | x + \frac { 1 } {

1.	\left. \begin{array} { l } { \text { Solution of } \| x + \frac { 1 } { x } \| < 4 \text { is } } \\ { ( a ) ( 2 - \sqrt { 3 } , 2 + \sqrt { 3 } ) \cup ( - 2 - \sqrt { 3 } , - 2 + \sqrt { 3 } ) } \\ { ( b ) R - ( 2 - \sqrt { 3 } , 2 + \sqrt { 3 } ) } \\ { ( c ) R - ( - 2 - \sqrt { 3 } , - 2 + \sqrt { 3 } ) } \end{array} \right.
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