若3的m次方=6,9的n次方=2,则3的(2m-4n+1)次方等于多少?
问题描述:
若3的m次方=6,9的n次方=2,则3的(2m-4n+1)次方等于多少?
答
9的n次方=2
3^2n=2
3^4n=4
3^2m=36
3的(2m-4n+1)
=3^2m/3^4n*3
=36/4*3
=9*3
=27