log底数是2 真数是2分之1怎么算?
log底数是2 真数是2分之1怎么算?
数学人气:941 ℃时间:2019-09-09 18:09:46
优质解答
2分之1=2^(-1) 根据对数的性质 来做 得到-1
我来回答
类似推荐
猜你喜欢
- 1枯藤老树昏鸦 小桥流水人家 古道西风瘦马.
- 2在锐角△ABC中,a,b,c分别为角A,B,C所对的边,且3a=2csinA. (1)确定角C的大小; (2)若a=2,b=3,求△ABC的面积及边长c.
- 3what do you think we should do to improve our environment?
- 4l spent two hours( )my things yesterday
- 5将They are cleaning the window.改为一般疑问句
- 6三个数的和是1101.已知甲数是乙数的3/4,丙数比乙数多1,乙数是多少?
- 7With everything she needed _____.,she went out of the shop,with her hands full of shopping bags.
- 8Lily__ask the teacher questions when she has time.A.keeps to come B.keeps coming to
- 9从长是10厘米,宽是8厘米的长方形铁皮上,剪下一个最大的圆,圆的面积是()平方厘米.若剪下最大的半圆,周长是多少厘米.
- 10There is nothing permanent except change