MathDB
Keeping an Equation True

Source:

February 15, 2009

Problem Statement

For the equation \frac {1 \plus{} x}{1 \minus{} x} \equal{} \frac {N \plus{} 1}{N} to be true where N N is positive, x x can have: <spanclass=latexbold>(A)</span> any positive value less than 1<spanclass=latexbold>(B)</span> any value less than 1 <span class='latex-bold'>(A)</span>\ \text{any positive value less than }1 \qquad<span class='latex-bold'>(B)</span>\ \text{any value less than }1 (C)\ \text{the value zero only} \qquad(D)\ \text{any non \minus{} negative value} \qquad(E)\ \text{any value}