Simple wireless networks can be set up for the home or small office using one's existing Internet access. Typically, a person who is familiar with setting up a computer can install a home wireless network in about an hour by following the guides and manuals.
The number 2 {\displaystyle \scriptstyle {\sqrt {2}}} is irrational. In mathematics, an irrational number is a real number that cannot be expressed as a ratio of integers, i.e. as a fraction. Therefore, irrational numbers, when written as decimal numbers, do not terminate, nor do they repeat.
In mathematics, a rational number is any number that can be expressed as the quotient or fraction p / q of two integers, p and q, with the denominator q not equal to zero. Since q may be equal to 1, every integer is a rational number. The set of all rational numbers is usually denoted by a boldface Q (or blackboard bold, Unicode â); it was thus denoted in 1895 by Peano after quoziente, Italian for  quotient .