与动物为友作文400字

1. 1. 已知函数图像y=f(x)的图像关于直线x=-1对称,且当x∈（0,+∞）时,有f(x)=1/x,则当x∈（-∞,-2）时,f(x)的解析式为________. A.-1/x B.-1/(x-3) C.1/(x+2) D.-1/(x+2) 2.函数y=|x|/x +x的图 1.2.解方程3.求函数 第三题选神马? 第三题是神马 高一数学:6题,详解谢谢你 几道高一数学题.有详解给分.1.求过点P（1,3）切被圆x²+y²=4截得长为2倍根号3的弦所在的直线方程.2.一条直线被直线m：3x+4y-1=0和直线n：4x-3y-10=0截得的线段中点恰为（5,2）,求这条直线的 1.已知三角形ABC的三边a,b,c是整数,其周长为20,面积是10√3,又三个内角A,B,C成等差数列.求该三角形三边的长.2.若 cos²A+2msinA-2m-2＜0 对任意的A恒成立,求常数m的取值范围.3.已知三角形ABC的外接 求不等式2分之X-3+6＞6分之6X-1 高中英语必修一第20页的题的答案,还有原因.必须要有原因, 高中英语新课标必修4unit3第20页的练习的答案 选择 英语1、Amy（ ）think animals can thinkYes,she is rightA、not B、doesn‘t C、don’t2、My cat seems （ ）scaredReally?Can it feel fear?A、be B、to be C、being3、I am afraid that（ ）Oh,I am sorry.A、you are wrong B、are you 英语选择呀 求不等式(x-3)\3-（6x-1）\6>-3的非负数的解 不等式3(x-2) 不等式3（x-2》≤6的非负数整数解是? 求不等式（x-3）/2+3>（6x-1）/6的正整数解, 题应该是求不等式2分之x-1-3分之x+1小于又等于6分之1-x的正整数解. 几道英语选择1.I'll be away on a trip.Would you mind looking after my pet dog?A.OK,I've no time B.OK,I'd be glad to.2.---I knocked into a tree when I went to the station. ---I suppose you ____too fast.A.drive B.are driving C.drove D.was drivi 几道英语选择 Were filming by the lake____we saw a small boat coming towards usa since b after c when d beforeMum ,l can't bear the pain lt won't be long ___the doctor comes a while b before c since d asEveryone should remain ___until the film f 几道英语选择 几道英语选择谢谢. 7.6=4(3.7-3x)解方程 这几道英语选择该怎么做? 数学函数知识点总结 高一数学函数知识点总结怎样得到 英语四道选择 求高一数学函数的所有知识点以及对应例题{最好再写出特殊的例子} 四道英语选择 八上数学函数知识点有什么 英语选择4道A.ten minutes to goB.ahead ofC.raise one's hand D.spare the time toE.keep stillF.forwardG.be readyH.take part inI.fell nervous1.She took two steps ___to gret the visitor.2.Are you ___for the quiz show?3.I was unable to ___go on holida 4道英语选择, 四道英语选择,1.____ whether he will come or not.【D】A.I’m sure B.I’m sure that C.I’m sure not that D.I’m not sure2.You are so____ (luck) to study abroad.【luckily】3.Mary said she had____ (forget) to do her homework and she was ver