对于|x|/x,
当x>0时|x|=x,|x|/x=1
当x
已知有理数a.b.c均不为0,求|a|/a+|b|/b+|c|/c的值,
已知有理数a.b.c均不为0,求|a|/a+|b|/b+|c|/c的值,
数学人气:810 ℃时间:2020-03-31 21:10:18
优质解答
我来回答
类似推荐
猜你喜欢
- 1北宋大城市生活的特色
- 29个复韵母和九个鼻韵母各是什么?
- 3(a的平方乘b减2乘a乘b的平方减b的3次方)除以b减(a加b)乘(a减b),期中a=2分之1,b=负1,
- 4本小弟在做回家作业,get on with sb和get on with sth的区别!
- 51/3+1/15+1/35+1/63+1/99+1/143=_.
- 6tell me____ A what are you reading B what do you reading C what you are reading D you are reading
- 7I went to see my uncle_____the morning____July 12th.
- 8they have just had lunch 改成一般疑问句 i am going to have a holiday next week 对next week提问
- 9He is on my left.I am _____ ______ ______ ______ _____.
- 10如图,抛物线y=ax2+bx+c与x轴交于点A(-1,0),顶点坐标为(1,n),与y轴的交点在(0,2)、(0,3)之间(包含端点),则下列结论: ①当x>3时,y<0; ②3a+b>0; ③-1≤a≤-23; ④3≤n≤