Question

Ajutor exercitiu E(x)!!

Trebuie sa dea 1/x+1

Answer 1

$( \frac{1}{x + 1} - \frac{1}{ {x}^{2} - 1 } \div \frac{x}{x - 1} ) \div \frac{ x- 1}{x} \\ (\frac{1}{x + 1} - \frac{1}{(x - 1)(x + 1)} \times \frac{x - 1}{x} ) \times \frac{x}{x - 1} \\ (\frac{1}{x + 1} - \frac{1}{x + 1} \times \frac{1}{x} ) \times \frac{x}{x - 1} \\( \frac{1}{ x+ 1} - \frac{1}{x(x + 1)} ) \times \frac{x}{x - 1} \\ \frac{x - 1}{x(x + 1)} \times \frac{x}{x - 1} \\ \frac{1}{x + 1}$