Question

For f(x)=log(the 2 is below log)2(x), between which two integers does f(40) lie?

Answer 1

f(x) = log2 x

f(40) = log2 40

40 = 2^y

2^5 = 32 and 2^6 = 64

so f(40) lies between  integers 5 and 6.