Answers

2014-08-19T19:45:52+08:00
 \frac{ \frac{1}{2} }{ \frac{1-x}{x-1} }  \\  \\ = \frac{1}{2}/ \frac{1-x}{x-1}   \\  \\ = \frac{1}{2}* \frac{x-1}{1-x} \\  \\ =\frac{1}{2}*(- \frac{x-1}{x-1}) \\  \\ =\frac{1}{2}*(-1) \\  \\ =- \frac{1}{2}
0
hmm? thanks for answering this but the given that you write is wrong