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求函数y=x^3-3x^2+2x-6的一个正零点的近似值,1小时内 若函数f(x)=Inx+2x-6在区间(2,3)内就零点那么该函数零点的一个近似值（精确到0.01） 求函数y=x^3-3x^2+2x-6的一个正零点的近似值 f(3)=0,那么第一个区间的端点应该取哪两个? 已知f（x）=-x^3-2x+4求证此函数有且只有一个零点,并求出此零点近似值.（精确到0.1）不要用求导,近似值问题可略做. 10比X的2/5少2,求X..（用方程解）. 请帮我解一个一元二次式方程.（10+5）的平方=（5+X）的平方+10的平方 急,尽快~ 关于数学下面的一个复数方程：（2x^2-5x+2)+(x^2+x-2)i=0求解.一定要把答案算出来告诉我，谢谢 已知关于X的方程,5x-2A-3=3X+A+5的解是复数,求A的取值范围 x^4+3x^3+5x^2+4x+2=0,巳知它的根中有一个为i-1求方程在复数C中的解集 求函数y=x^3-2x^2-x+2的零点 指数方程怎么解?例如10^x=25怎么解? 10%x+25%(10-x)=13%这个方程怎么解? (x+1)比25=13比10怎么解这个方程0.6x+2.2x-0.2=1/5 函数f(x)在定义域R上是偶函数且f(x+1)=-f(x),若f(x)在（-1,0）上是减函数那么f(x)在（1,3）是? 解方程 |x+3|+|x-1|=5 |x-1|+|x-5|=4 提示：零点分段法 一篇英语作文,求检查修改语法错误某英语报开开辟中学生栏目,就某些热点问题展开讨论,请以It`s__to learn__by yourself为题,写一篇短文,以便为该栏目投稿内容要点提示①补全题目 ②确定你的观 帮忙看一篇英语作文有无语法错误并指出I have a great dream .i want to be an astronaut when i grow up .i am surprised at univers .it is very beautifui and intretsting .i liked the univers very much .i know something about it i know the 帮我检查一下这篇英语作文有没有语法错误一定要细细检查May 12th is an unforgettable day for all the Chinese people.There was a serious earthquake on that day in Sichuan Province.The buildings fell down suddenly and thousands of 英语作文,检查是否有语法错误Now,the progress of science,great changes have taken place in people's lives.Almost everyone has his own private cars.In the street,everywhere is a busy scene.There are a lot of people and vehicles.But people n 帮忙检查英语作文的语法错误好吗I wached a film called"Alice In Wonderland” last Sunday with my sister .It is a children's story .The heroine of the film is a girl called Alice .She is good-looking.One day,she went to take part in a pa 当b为何值时,关于x的方程-2x-b=0的接比关于x的方程0.5+2b=0的解小3 零点分段讨论|2x-1|+|x+2|>0,求x的解集.|2x-1|+|x+2|>0,求x的解集.请不要留下答案就完事,请讲清楚每一步,为什么?最好能提出一些容易出错的问题,请懂的人指点.我不理解的地方主要是1、每段的取值 设f(x)在R上是偶函数,在区间（负无穷大,0）上递增的,且有f（2a平方+a+1) 设f（x）在R上是偶函数,在区间（-无穷大,0）上是递增的,且有f（2a平方+a+1）〈f（2a平方-2a+3）,求a的取值范围 谁能帮我检查一下这篇英语小作文有什么语法错误…谢谢! 高分英语文章语法错误检查!How to be approved for an Adsense accountIn this article I will tell you a quick and easy way to open an account Adsense and approved by Google.Google Adsense is one of the best way to allow webmasters to earn mon 若f(x)的零点与g(x)=e^x+4x-3的零点之差的绝对值不超过0.25,则f(x)可以是A、f(x)=2^x-1B、f(x)=lg(2-x)C、f(x)=2x+1D、f(x)=丨2x-1丨 已知函数fx=2x²-1 用定义域证明fx是偶函数 求函数f(x)=x^3-2x^2-x+2的零点 函数f(x)=绝对值sinx-x/2π的零点个数是?这我当然知道，我就是不会表示有多少个交点啊。 帮忙修改下英文演讲稿,.标注下哪里有语法错误.Hello everyone,my name is LengPinwen.I’m gold to stand on here Today.I want to talking about friendship.Friendship is an important part of our life.Everyone needs friends.But how to kee 帮我检查一下这段英文有没有语法错误,顺便帮我改正一下,Today I was sick,so I had to go to the doctor and rest.I told the doctor,I have no strength,headache,and I do not want to eat anything,and I am hot.The doctor said I had a c