If log a/b + log b/a = log (a + b), then:
Choose one:
A) a = b
B) a - b = 1
C) a + b = 1
D) 15
E) 22
Explanation:   log a/b + log b/a = log (a + b)   log (a + b)=log(b/a*a/b)= log 1   So, a + b = 1.   answer a + b = 1
<result>C</result>
If log a/b + log b/a = log (a + b), then: