Q. Evaluate.log881Write your answer in simplest form.
Define Logarithm Function: We need to find the value of the logarithm of 81 to the base 8. The logarithm function logb(a) answers the question "to what power must b be raised, to get a?". In this case, we are looking for the power to which 8 must be raised to get 81.
Convert 1/8 to 8−1: We know that 1/8 is the same as 8 raised to the power of −1, because 8−1=1/8.
Apply Logarithm Property: Therefore, log881 is the same as log88−1. According to the properties of logarithms, logb(bx)=x. So, log88−1 is −1.
Find Log base 8 of 1/8: We have found the value of the logarithm without needing to perform any complex calculations. The value of log base 8 of 1/8 is −1.