College Algebra 7th Edition

(a) This is false. $\log(A+B)\neq\log A+\log B$ We can show this thus: $\log A+\log B=log(AB)\neq log(A+B)$ (since $A+B\neq AB$) (b) This is true. $\log AB=\log A+\log B$ (This is a general property of logs.)