阿长与山海经读后感100字

解方程：x+x／6=140 x/6-6=6解方程 6(20+x)-4x=140解方程, 已知代数式2x²+ax-y+6-2bx²+3x-5y-1的值与字母x的取值无关,求1/3a³-2b²-1/4a³+3b²的值 一次函数y=kx+b的图象经过平行于正比例函数y=0.5x的图像,且过点(4,7),求一次函数的解析式以及与坐标轴的交点坐标 一次函数y=kx+b的图像经过(-2,-10)且与正比例函数y=0.5x的图像相交于(4,a) 求A的值 一次函数y=kx+b的解析式 这两个函数图像与Y轴所围成的三角形的面积 一次函数y=kx+b的图像经过(-2,-10)且与正比例函数y=0.5x的图像相交于(4,a) 求A的值 若方程lg(ax^2-2x+2)=1在[1/2,2]内有解,求实数a的取值范围 求lim[(1+2x)^10(1+3x)^20/(1+6x^2)^15],x趋于无穷 求lim x趋向于无穷时(-X)/(2X^2+3x-1)答案 what does she do in the morning?请您帮我解释下.还有这句话是现在时,还是将来时. What does she do in the morning 和 What is she doing now 前句用 does 后句用is ,为什么? what does she do in the morning 这句话的结构,哪一个是主要动词? 1.what does she have in the morning?给出(milk,eggs ).我答的是:she eats milk and eggs in the morning.2.He come home at 6:00.要求写问句"他6点在什么地方?"我答:where is he at 6 o'clock? 方程lg(ax^2-2x+2)=1在[1/2,2]内有解,求实数a的取值范围 I don't know .What time does he often get up?合为一句 does underground leave what the time?[连词成句] what does the doctor ask mrs smith to eat every day? what does Tom do every day Tom usually gets up early in the morning.he h___breakfast at seven.Hehas breadnand milk f____breadfast.He g____workat about 7:30.He is never l_____for school.He has four c____in the morning.at about12he comes home for lunch What does Smith ask Green to do then what does cindy smith do?中文意思 当x趋向于无穷大时,lim(2x+3/2x+1)^(x+1)=怎么计算啊 What does Smith ask Green to do 精华 求lim x→1 2x-3/x^2-5x+4 因为lim x→1 x^2-5x+4/2x-3 = 1^2-5×1+4/2×1-3 = 0,根据无穷大与求lim x→1 2x-3/x²-5x+4 因为lim x→1 x²-5x+4/2x-3 = 1²-5×1+4/2×1-3 = 0,根据无穷大与无穷小的关系得lim x→1 2x-3/x
x²-3x+1=0求根号x²+1/x²-2是数学八年纪下二次根式的运算 x-8=6x这么解 解方程 3.6x+24.5=31.7 要过程 2.6x-5.76=x+5.76 解方程 求提成excel函数公式产值少于30000元,工资2900元；产值30000元至35000元,工资3000元；产值35000以上,工资3000元加超出35000元的部分乘以0.09%（即如果产值为42000元,工资是3000元加超产值的7000x0.09=630元 EXCEL 算提成的公式,例如：一个人的任务是10000,完成70%以下时提成4.5%,当完成70%以上80%以下时超出部分提成6%,当完成80以上100%以下时超出部分提成8%,以此类推,然后各部分提成相加为这个人总提 解方程,去括号,去分母 1-x/4-1=x+1/2 －0.1x方＋2.6x＞0 求x范围.谁能帮我解决一下