Question

How do you solve `log(x-5)=-2`?

Answer 1

`x=5.01`.

Explanation:

By defn. of `log` function, `logt=m iff t=10^m`

`:. log(x-5)=-2 rArr x-5=10^-2=0.01`

`:. x=5+0.01=5.01`.