Question 1150670
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Replace each "x" with "-1/x" and simplify....<br>
{{{(4(1-(-1/x)))/(1-1/(-1/x))}}}<br>
{{{(4(1+1/x))/(1+x)}}}<br>
{{{(4((x+1)/x))/(x+1)}}}<br>
{{{4/x}}}<br>
ANSWER: f(-1/x) = 4/x<br>