二年级作文暑假的收获

请求一下极限、、、、、、 求极限, 这个极限谁帮我求一下呀~ 修一条路,己修的比没修的多25oo米,己修和没修比为8比3,这条路长多少米? 极限问题,帮忙做一下,谢谢,求证：当x趋于0时,x+ln(1-x)与-1/2x^2是等价无穷小 谁能帮我用spss进行独立样本T检验?实验前3班成绩 92 78 111 98 61 75 99 107 136 90 112 122 85 72 126 72 126 132 108 112 71 105 106 135 124 106 94 104 122 141 105 135 87 96 103 121 100 85 93 70 121 84 101 实验前4班成绩48 47 117 12 求极限,看下面图 证明极限存在 一次函数y=kx+1的自变量增加3时,函数值就相应减少1,则k的值为 已知一次函数y=kx+b,当自变量x减少9时,函数值反而增加3,则k为多少? 一次函数y=kx+1的自变量增加1,函数值就相应减少3,那么k的值是? 一次函数y=kx+2的自变量增加3时,函数值就相应减少1,则k的值为 read the passage and tell True (T) or False (F)why does the Leaning Tower of Pisa in Italy lean ? it leans because of a mistake . it has leaned almost since the day the tower was built .in 1173 , the people of Pisa , Italy , wanted to build a biell t read and write T{for true}or F{for false} 阅读短文并判断,是{T}不是{F} Read and write "T" for true and "F" for false 199999-19999-199-199-19= 怎样简便计算 199999+19999+199+19得简便运算 修一条公路,已修长度与未修长度比为1比5,再修490米后,此时已修长度与未修长度的比值为3.这条路长?快 英语翻译Clean your room!Bob's mom is mad.His room is in a mess!She says,"Clean your room!"Bob puts his toys under his bed.Bob puts his dirty clothes under his bed.Bob puts his books under his bed.He says,"My room is clean now." 一道化工热力学的题目,要求证明两个变量是独立变量.可是独立变量是什么啊 abaqus里独立变量以升序排列是什么意思? 理论力学一道题 如图 问题1：那个独立运动变量什么意思 问题2：Vbx为什么是Va+.理论力学一道题 如图 问题1：那个独立运动变量什么意思 问题2：Vbx为什么是Va+.那个 直接算的话 就是 对于物理的刚体的转动,有疑问 “刚体有6个独立变量,那他门分别是什么!”要具体点,说明清楚,6个变量,那为什么“刚体会有6个变量” 要解释清楚点, 在一个减法算式里,被减数,减数与差的和等于1260,而差是减数的17倍,那么差等于多少? Read the passage quickly and _____ the answer to this question.A、look for B、find out C、look out D、find 1._______we found out the answer to this question.2.Many goods are on ______in the super market .3.Because of the bad weather,the meeting is _______until next Friday.4.After we paid for the goods,we received a _______from the salesman. I ---will go and find out the answer to this question是要填反身代词 Read a passage and answer the question. 一道减法算式中,被减数是17.5,差比减数多10.5,这道减法算式中的减数是多少 who can find another answer什么this question 已知F1、F2是平面α内的点,且|F1F2|=2c（c>0）,M是α内的动点,且|MF1|+|MF2|=2a,判断动点M的轨迹 若一次函数y=kx+b,当x得值减小,y的值就减小2分之1,则当x的值增加2时,y的值 A.增加1 B.减少1 C.增加2D.减小2