3的m次方=4,3的m-4n的平方=81分之4 求1999n的平方==?
人气：188 ℃ 时间：2019-08-16 22:25:21
解答
3^m=4
3^(m-4n)=4/81
3^m/3^4n=4/81
4/3^4n=4/81
3^4n=81
3^4n=3^4
4n=4
n=1
1999n^2
=1999*1^2
=1999*1
=1999
推荐
- 若3的m次方=81分之1,2分之1的n次方=4,求（1+x的平方）的3n次方的值
- 若3的m次方=4,3的m-4n次方=4/81,则1999n=
- 已知:3的m次方=4,3的m-4n次方=81分之4,求2010的n次方的值
- 已知3的m次方=4,3的m 4n次方=八十一分之四,求1999的n次方
- 已知3的m次方=4,3的m-4n的次方等于81分之4,求2006的n次方
- When love beckons to you,follow him,though his ways are hard and steep.And when his wings enfold you,yield to him,though
- In order to study the s____in Russia ,Marx began to learn Russian in his sixties.
- 函数y=3|x|的递减区间是_．（用区间表示）
猜你喜欢
