Question

Estimate log4(21)by choosing the interval in which the answer would space lie. [1,2] [2,3] [3,4] [5,6]

Answer 1

If

`log_(a)(b) = c \\ {a}^(c) = b`
using this, you know that


`{4}^(2) = 16 \\ {4}^(3) = 64 \\ 16 < 21 < 64`
so you know the interval is [2,3]