# Assuming x and y and z are positive ,use properties of logarithm to write expression as a sum or difference of logarithms or multiples of logarithms. 13.log x + log y 14. log x + log y?

##### 1 Answer

Nov 21, 2016

#### Answer:

#### Explanation:

#log(x)-log(y) = log(x/y)# #log(x^a) = alog(x)# #log_x(x) = 1#

To derive the property used in the given question, recall that

Then

Now, taking

As