feelfelt

You shouldn's touch it (祈使句）句型转换 急 区域D：|x|≤1,0≤y≤1,则二重积分ff (1+x^2sinx)dxdy的值等于? 二重积分ff(D)(x+1)dxdy= 计算二重积分：I=∫∫下标Dy（1-x）dxdy,其中D由y=x,x=1及x轴所围区域 ∫∫|cos(x+y)|dxdy 其中A=[0,π]*[0,π] 这种绝对值的二重积分要怎麼做? They were——toward the riverhavingcausingforcingmaking给出正确答案,理由,翻译 They were _ towards the river.havingcausingforcingmaking选出正确答案,理由,和中文翻译 They were making for the river. 如果A=2乘2乘3乘5,B=2乘3乘3乘5,那么A和B的最大共因数是多少,最小公倍数是多少? a=2乘3乘5,b=2乘2乘5,那么a和b的最大因数是（）,最小公倍数是（）. 生物：水稻与杂草之间的关系属于水稻田间有一种杂草与水稻争夺营养物质,生存空间.水稻与杂草之间的关系属于:(为什么是寄生关系,为什么不是竞争关系?)那个杂草的名字我还不认识,左边 一个两位数十位数字是x个位数字是y则这两位数为 已知y=tan（πsinx/根号3）,1.求值域,定义域、 请问make a 函数y=tan(sinx)值域 There were so many furs that when they were packed tightly and tied together they made a bundle almost as big as Pa.a、lightly a、lightly b、 firmly c、 together d、 in a bundle替换“tightly”这题应该选哪个?为什么?有没有其他 请用英文回答Who invented the aeroplane?When were they born?Which is the longest river in China?准 Jackson Curtis: When they tell you not to panic... that's when you run!2012中出现的这对白是什么意思了? 梅花魂讲了几件事 课文写了外祖父的哪几件事 《梅花魂》写了有关外祖父的哪几件事 《梅花魂》中,作者回忆了外祖父生前的哪几件事情?————————————————————————. 《梅花魂》:读课文,作者回忆了外祖父生前的那几件事? y=tan(2/π+sinx)定义域 They were playing by the door a short time ago.(改为否定形式的疑问句）如题. （1）y=根号-sinx定义域,（2）y=tan(x+派/3) knock at the door 和 knock on the door有什么区别吗详解,谢 knock at the door和knock on the door到底有什么区别? by a passing plane,和by a knock at the door1.he strated to complainthis wicked world but was interrupted by a knock at the door.2.i think this house must be koncked down by a passing plane为什么加a不是by后不加a吗? They knock door to door for hlep 动态规划和贪心法有什么区别?有什么联系? 在整式的乘法中 同类项乘同类项的法则