坚强的仙人掌作文450

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坚强的仙人掌作文450
只有在定义域为R时才可以用公式法判断函数的奇偶性吗 若函数f(x)的定义域为R,求实数a的取范围?谢谢其中用到了△,为什么要△<0 商店为了促销某品牌空调,承诺于元旦那天购买空调可分两期付款.在购买时先付一笔钱,余下部分及贷款利息(年利率为5.6%)在下一年元旦付清.已知该空调售价每台8224元,若两次付款数相同, 求学霸解第(2)题 求解题过程 求学霸指点 负二分之一、负三分之、负四分之一、负五分之一.中最大的是_____ 求(1)(2)(3)题, 第1第3题, 求学霸帮忙算一下1、2、3题 1.2.3.4.5. It is a cat 改为一般疑问句,并做否定回答 this is a cat.改为一般疑问句.It is a carrot.改为负数形式.They are vegetable and fruit.第三句话对vegetable and fruit 提问. It was beside a lamp,改为一般疑问句,Whrer is my cat?用一般过去时改写句子The second bottle was in Jack's hand(对in Jack's hand提问)Was it near the sofa?(用in front of改写句子)谢谢! 已知sin(2α-β)=3/5,sinβ=-12/13,且α∈(π/2,π),β∈(-π/2,0)求sinα 3题 求学霸解答 x为何值时,式子二分之x—3与式子—3分之x+1满足下面的条件 (1)相等 (2)互为相反数 His eraser is under the desk 对划线部分提问 对划线部分提问是under the desk Is the book under the desk?如何用否定句回答 X-1的绝对值+小括号Y+2的平方=0,则X+Y的2003次方是 第五题! 根据答句写出问句 ____________--His cat is under the desk ________ -YES,it is.MYhat is on the bed___________-No,they aren't.Her pencils are not in the bookcase .They are in her desk________-Their plants are on the table.用适当的介词填 ---_____ ______ ______ on the chair?---No,it isn't.The cat is under the desk. 若式子2(x+3)和3(1-x)互为相反数,则x等于多少 当x=___时,式子2/3-2x与3/2-x互为相反数. (对划线部分提问) The volleyball is under the desk.--------------------- The girl [under the desk] is Lucy(对划线部分提问) ____ ____ is Lucy? He is as an American as an apple pie.这个句子该怎么翻译? 2分之1X平方Y-2XY+2Y=?好难的 4(x的平方+2y的平方)-2(x的平方-2xy)-【x的平方-(2xy-2y的平方)】其中(x-1)的平方+|y+2|=0 2分之1x的平方+2xy+2y的平方 分解因式 The man with big eyes ( )a teacher.Where ( )your mother ( )David and Helen from England用be动词的适当形式填空 求小学人教五年下语文词语盘点快,要词语盘点1-8快的加分!