专心致志无缘无故语重心长狂风暴雨勃勃生机座无虚席意想不到惊心动魄养尊处优造句

若根号(x的立方+3倍x的平方)=-x根号(x+3)成立,求x的取值范围 已知地球质量为M,半径为R,地球表面的重力加速度为g,引力常数为G,有一颗人造地球卫星在离地面上高h处(该处重力加速度为g)绕地球做匀速圆周运动,那么这个卫星的运行速率为 （ ）A、√（GM/ 一颗人造地球卫星离地面高h=3R（R为地球的半径）.若已知地球表面的重力加速度为g求卫星做匀速圆周运动的速度.角度度.周期. please help me to understand this sentence (260)The television show 60 Minutes once ran an episode on some decrepit manufacturing plants in England. 一颗人造地球卫星离地面高h=3R(R为地球半径).若已知地球表面的重力加速度为g,则卫星做匀速圆周运动的速度是,周期是,若已知地球质量为M,万有引力常量为M,万有引力常量为G,则卫星做匀速运 please help me to understand this sentenceMany people are disturbed to learn that present-day paper money is neither backed by nor convertible into anything more valuable-that it consists of nothing but pieces of paper whose value derives from common please to help me to understand this sentenceIn recent times feminists and aboriginals often have a hard time with economic principles because of the reluctance of economists to assume men and women or natives and non-natives are fundamentally differ please help me to understand this sentence(133)George is trying to get a new paartment in his building which is rent controlled.Those in charge of renting the room out are going to give it to an old man because he survived a ship sinking at sea.Georg please help me to understand this sentence(130)When markets work well at allocating goods, preventing the market from working by restricting the movement of prices will lower the total gains from trade. 已知命题p:x1和x2是方程x^2-mx-2=0的两个根不等式a^2-5a-3>=[(X1-X2)的绝对值]对任意实数m属于[-1,1]恒成立,命题q：不等式ax^2+2x-1>0有解,若命题p是真命题、q是假命题,求a的取值范围 为什么|x1-x2|=√(m^2 已知命题P:x1和x2是方程x^2-mx-2=0的两个实根 不等式a^2-4a-2>=lx1-x2l已知命题P:x1和x2是方程x^2-mx-2=0的两个实根,不等式a^2-4a-2≥lx1-x2l对任意实数m属于[-1,1]恒成立;命题Q:只有一个实数x满足不等式x^2+2 用宽字组成恰当的词语填入下列句中的括号里! 求行列式 a b .b b a .b ...b b b .a 设随机事件AB相互独立,已知只有A发生的概率是1/6,只有B发生的概率喂1/4,求P（A）? 根据具体语境解释下列句中括号的词语.1.民族生命的进程,其经历亦复如是（亦复如是）2.旦辞黄河去,暮至黑山头.（辞）（去）3.我看见这些情形,正在诧异（诧异）4.对于关东原野,我们心里 地球半径是R表面的重力加速度是g卫星在距离地面高R处做匀速圆周运动时 好像是一个形容词 生命就像一（量词+形容词+的+名词）,（形容词）最后一个形容词要是成语多来几句 集合A={x|x为什么？ 已知【分段函数】f（x）=-x+3-3a,x＜0或a^x,x≥0 （a＞0且a≠1)定义域是R,求a的取值范围 假设A,B.C是三个互相独立的随机事件,且0 行列式|a b b b,a b a b,a a b b,a b b a| 求B的行列式：|B|=A^3+A^2+A 在如图的图形中,(1)试说明角BDC=角A+角ABD+角ACD 如图所示,说明:角BDC>角A. 在乡村看到木梨有哪些古诗 关于关于新年的古诗有哪些?在线等了,梨十分谢谢各位 有没有关于梨的古诗 翻译句子：你能吃多少梨? 翻译下列句子--有多少张桌子? 我不喜欢苹果和梨.这句话怎么翻译 past tense 和 past perfect tense 分别?例如：I bought a new coat.I had bought a new coat.有啥分别?各应该在什麼时候用?