Question

8的a次方等于32,8的b次方0.5,求3的a次方除以3的b次方等于多少

Answer 1

8的a次方等于32,2^(3a)=2^5 3a=5 a=5/3

8的b次方0.5 2^(3b)=2^(-1) 3b=-1 b=-1/3

3的a次方除以3的b次方=3^(a-b)=3^(5/3+1/3)=9