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已知f(x)=x^3-1/2x^2+bx+c1,若f（x）的图象有与x轴平行的切线,求b的取值范围2,若f（x）在x=1时取得极值,且x∈[-1,2],f（x）＜c^2恒成立,求C的取值范围. 混有哪些读音,并组词 某音乐会门票300元一张,降价后观众增加一半,收入增20%,求降价多少元? 某音乐会的门票300元一张,降价后观众增加了一半,收入增加20%,每张门票降价多少元? 音乐会门票300元一张,降价后观众增加了一半,收入增加了百分之二十,每张门票降价了多少元?要有过程！快！ 续写卖油翁 卖油翁续写 文言文《卖油翁》续写,文言文和白话文都可以,一定要有创新我会付给你5金币,因为只剩这么多了. 卖油翁续写 求求你 们拉 超急的快 快 快 快. 续写《卖油翁》 根据实际情况回答问题.1.Who is the tallest in your class?___________________________________2.How many people are there in Shenzhen?________________________________________3.Which seasons do you like best in a year?__________________________ 按实际情况回答问题1.What did your father do this morning2.When did Yang Liwei become the first person from China in space3.How often is there a sunset or sunrise4.Which planet has tow moons in the solar system 根据实际情况,How many crayons do you have I have ------------------------What color do you like I like--------------------- 按实际情况回答Which planet has two moons in the solar system?Who is the tallest in your class?How many people are there in Shenzhen?Which seasons do you like best in a year?Is your classroom big or small? What do you want to be one day?( ) （-3）x（-4）-60÷（-12） -1+5÷（-6分之1）x（-6） （3分之1 - 2分之1）÷（-1又4分之1）÷10分之1请写清楚过程... 按实际情况回答下列问题.1.What do you usually do on the weekend?2.Which season do you like best?Why?3.Is your birthday in September?4.When do you get up?5.What's the date today? 根据实际情况回答下列问题What do you usually do after school?Are youas tall as yuor mother?Can you run faster than the other students in your slass?How do you go to school in the morning?Who goes to bed later,you or your father? They have many balls,but we have [m ] 根据实际情况,回答下列问题.How do you go to school?How does your father go to work?How does your mother go to work?How do you go to Shanghai? 按实际情况回答下列问题!（英语）(1)Which month is the hottest in Guangzhou?(2)What food do Chinese people usually have for dinner?按实际的! 按实际情况回答下列问题!（用英语）1、Whese eyes are bigger than yours in your class?注意：回答的时候可以用自己编的名字 求解这几道题 1.在一个直径为20厘米的半圆内,画一个面积最大的三角形,这个三角形的面积是（ ）平方厘米?2.将一个边长为6厘米的正方形剪成一个最大的圆形,圆的面积占正方形面积的几分之几?3.在直径为1 -.请根据实际情况回答问题1.Where do you have lunch?( )2.What do you have for lunch?( )二.句型转换1.What does his mother do?(改同义词）（ ）（ ） his mother? 如图,等腰梯形ABCD中,AD//BC,AB=CD,AD=10cm,BC=20cm,如图,等腰梯形ABCD中,AD//BC,AB=CD,如图,等腰梯形ABCD中,AD//BC,AB=CD,AD=10cm,BC=20cm,动点P从点A开始 离问题结束还有 14 天 22 小时 提问者：I一头热 | 浏览次数 如图,等腰梯形ABCD中,AD//BC,AB=CD,AD=10cm,BC=20cm,动点P从点A开始沿AD边向点D以1cm/s 的速度运动.同时,动点Q从点C开始沿CB边向点D以3 cm/s 的速度运动.当其中一点到达端点时,另一点也随之停止运动.设 10立方的混凝土运输车计算式采用的前后轴重及间距 按实际回答问题.1.What did your father do this morning?______________________________________2.When did Yang Liwei become the first person from China in space?_________________________________________________________________3.How often is there 根据实际回答问题1.Is your father going to visit New York next month?2.What's the biggest city of Australia?3.Which city is the capital of America?4.Which city do you like best,Tokyo,London or Paris?5.Are you going to have a birthday party thi I wanted to meet Russian friends in ChinaHasakeke Stan Kyrgyzstan Mongolia Uzbekistan friend.Regions (Xinjiang,Inner Mongolia and Heilongjiang.Even the whole country.) 阅读理解.Mona wanted to meet her friend,Maria,at New York.But Maria had to go to tMona wanted to meet her friend,Maria,at New York.But Maria had to go to the City Library to borrow books.Mona thought that libraries were totally boring,but she dec