>
数学
>
求下列函数的定义域:① y=x的平方-2x-3; ②y=x-5分之 1; ③y=根号3x²+2x-1
人气:488 ℃ 时间:2019-08-21 06:59:11
解答
①x为一切实数
②x-5≠0 x≠5
③3x²+2x-1≥0 (x+1)(3x-1)≥0 ∴x≥1/3 x≤﹣1
推荐
函数y=2x平方-3x-2分之根号下1-x的定义域为
求下列函数的定义域:(1)y=x²-2x-3;(2)y=x-5分之1(3)y=根号下3x²+2x-1
函数y=2-x2x2-3x-2的定义域为( ) A.(-∞,2] B.(-∞,1] C.(-∞,-12)∪(-12,2) D.(-∞,-12)∪(-12,2]
求函数定义域y=-根号x比2x²-3x-2
函数y=根号下1-x/2x^2-3x-2的定义域为
用寻隐者不遇见一片作文.
style="position:absolute;top:30px;left:5px">什么意思
Dia 50mm steep pipe polycar bonate sheet perforated steel sheet.谁能帮我翻译一下呢?
猜你喜欢
I hope you happy every day,that I am very happy.
lily is ___ beautiful than mary.A.a lot many B.a lot much C.a lot more
You don't look well.You'd better go to the______(doctor) at once.答案是什么
she __ in a high school A.studying B.teaching c,is studing d.is teaching 问一...
1度电价为0.5元,用一只220V/300W的灯泡照明10h,需付电费多少元?)
There are many trees on __ side of the street now
若关于x的方程x减二分之二加上二减x分之x加m等于二有增根求m的值
A除以B,商正好是8,因此A是B的倍数.这句话对还是错?为什么?
© 2025 79432.Com All Rights Reserved.
电脑版
|
手机版