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Question
"\\& \\( y = \\frac { 1 } { x } \\), the find the value of \\( \\frac { d y } { d x } - \\frac { d x } { d y } \\) ?\n\\( \\begin{array} { l l l } { \\text { (y) } 0 , } & { ( x ) - 1 } & { \\text { (d) } 2 } \\end{array} \\)"