想睡觉的诗句

当实数k为何值时,关于x的方程2kx²-2x-3k-2=0的两个实根一个小于1,另一个大于1. 已知k为负实数,方程x²-（k+1)x+k=0和x²-（k+2)x+3k=0（1）第一个方程是否一定有两个非负实数根?如果是,请说明理由（2）当k取何值时,这两个方程一定有一个相同的实数根? 已知连续函数f(x)在(a,b)上有唯一的零点,如果用“二分法”求零点（精确度为0.1）的近似值,则将区间等分的次数至少为几次 二分法求零点,函数的零点总位于区间[a,b],当|a-b|＜m时函数的零点近似值x=a+b/2与真实零点误差最大不超过 已知函数f(x)=e^x+4x-3.求证函数f(x)在[0,1]上存在唯一的零点并用二分法求函数零点的近似值.要有解题过程,谢谢! 如何利用计算器,用二分法求函数零点的近似值?举例说明. 关于x的一元二次方程2x²-3x-a²+1=0的一个根为2,则a的值是 关于x的一元二次方程2x²-3x-a²-1=0的一个根为2,则a的值是( ) A.1 B.√3 C.-√3 D.±√3 麻烦大哥们改一下英语语法错误in this movie there are some scenes are difficult to understand,and make the audience have a complicate mind know about this movie 借助计算器,用二分法求方程：X立方-X-1=0,在区间1到1.5闭区间内的实数解.（精确到0.1） 解下列方程：一：1/2x²-x-3/2=0 二：2x（3x+1）=3x+1 已知x=-4是方程3x+8=x/4-m的解,求m的平方-1/m的值 英语翻译Situation StatementIn order to take care of my family and child better,I resigned my position as a journalist in CCTV and became a housewife since 7th,2007.From last year,I have been taken my daughter to travel in some domestic tourist at 7.2一2x=41.6的方程怎么解? 方程式求解7.2X-X=49.6说详细点理由等说下1是怎么来的要解释 借助计算器,用二分法求方程2x=3-lgx在区间(1,2)内的近似解（精确度0.01）. 利用计算器,用二分法求方程x^2-2x-1=0的一个正的实数解,精确到0.1 英语翻译Long ago,you are zombie with a bulletproof heart.Until you met Helena,warming you bulletproof heart!Helena is pretty girl,like a star on sky.but she was dead!Day after day,you must keep on living without her.Her spirit will be go on.中 4.2x+3.9x=7.2的方程解答 方程2x比3等于7比2的解为多少 1.（x+1）（2x-3）-（x-1）（x+2）=x.x+71.（x+1）（2x-3）-（x-1）（x+2）=x.x+72.（2x+1）（4x.x-2x+1）-2x（4x.x+1）=03.（x-3）（x+2）=x.x-16 麻烦帮忙看看这句英语有没有语法错误I like beautiful buildings,so I want to be an architect.如果有更好的说法,也敬请回答! 已知f(x)的定义域为R,对任意x,y∈R,有f(x+y)+f(x-y)=2f(x)f(y),且f(0)≠0.求证：y=f(x)为偶函数 请英语好的朋友帮我看一下这句话有没有语法错误 You'll always be my dream,although this dream the impossible come true,although my distant darkness but you will brighten my day at the foot of the road. 定义在R上的函数f(x)是偶函数和周期函数.若f(x)的最小正周期是π,且当x∈[0,π/2]时,f(x)=sinx当X属于（π/2,π】时,求F（x）的解析式题目中为什么f(x)=sinx不是sin2x?Ω不是等于2π/T么? 用二分法求解方程x^2-8=0的根的近似值 用二分法设计一个求解方程X3—2=0在后【1,2】上的近似值的算法 这个英语句子有没有语法错误They think surfing the internet is hamful to not only our health but also our studing so that we aren't supposed to surfing the internet often but in correct time. 请问这个英语句子有没有语法错误?“Remember,we are the best.” 帮忙看看这个英语句子有没有语法错误I regarded him as a handsome man is the reason why I couldn't help loving the man whose name is Johhny Depp when I saw his film which is called Pirates of the Caribbean first.老师要我们造一句