Given a variable, x, the compound ineaquality representing the range from a to b inclusive of the variable is given by
[tex]a\leqx\leqb[/tex]
where a is the least value and b is the greatest value.
Thus, given a variable f, representing the frequencies for the three octaves of a typical acoustic guitar.
Where the range of the frequencies is between 82.4 Hertz and 659.2 Hertz inclusive.
The complex inequality, representing the range of frequencies for a guitar tuned to "concert pitch" is given by
[tex]82.4\leq f\leq659.2[/tex]
