Выбери правильные знаки

Известно, что \(a\gt0, \ b\gt0, \ a\gt b\) . Сравни:

1. \(\cfrac{a}{b}\) [ \(\gt\) | \(\lt\) | \(=\) ] \(\cfrac{b}{a}\) .
2. \(-\cfrac{a}{b}\) [ \(\gt\) | \(\lt\) | \(=\) ] \(-\cfrac{b}{a}\) .
3. \(\cfrac{1}{a}\) [ \(\gt\) | \(\lt\) | \(=\) ] \(\cfrac{1}{b}\) .
4. \(-\cfrac{1}{a}\) [ \(\gt\) | \(\lt\) | \(=\) ] \(-\cfrac{1}{b}\) .