Example 1.7.12 Square Root

The symbol \(\sqrt{b}\) has meaning when \(b\geq0\text{.}\) It means the positive number that can be squared to result in \(b\text{.}\)

  1. \(\sqrt{9}=3\)

  2. \(\sqrt{2}\approx1.414\)

  3. \(\sqrt{\frac{9}{16}}=\frac{3}{4}\)

  4. \(\sqrt{-1}\text{ is undefined}\)

in-context