calling+my+phone谐音

俟世韩1342calling 歌词 part six -
谢闵之17749878616 ______ It's such a misurie That they're by my side Tell me how do a breath How gona stay oh life It's crazy but it's true I think I know seems without you Without you baby I get gotta enought of you I need you day and night Pleas tell me what i do Iam a bad lose ...

俟世韩1342come+to+my+party用哪一个特殊疑问词
谢闵之17749878616 ______ How many of you would likt to come to my party?

俟世韩1342题号:11 You don't mind - ____ - you Xiao Li,do you?选项:a、callb、to callc、to callingd、my calling--------------------------------------------------------------------------... -
谢闵之17749878616 ______[答案] 很高兴为你回答问题,希望鄙人陋见对你有所帮助. D A A D C C B B D C

俟世韩1342平面lx+my+nz=p与二次曲面Ax^2+By^2+Cz^2=1相切的条件为: -
谢闵之17749878616 ______[答案] 切点M(x0,y0,z0)处满足 lx0+my0+nz0=p Ax0^2+By0^2+Cz0^2=1 二次曲面的法向量和平面的法向量,共线 Ax0/l=By0/m=Cz0/n 根据以上三个条件,设Ax0/l=By0/m=Cz0/n=t 所以Ax0=lt,By0=mt,Cz0=nt 带入第二个式子中, (lx0+my0+nz0)t=pt=1 所以t=...

俟世韩1342已知y2+my+16是完全平方式,则m值是多少 -
谢闵之17749878616 ______ 已知y^2+my+16是完全平方式,那么,y^2+my+16=(y+4)^2=y^2+8y+16 可以得出,m的值是8

俟世韩1342设抛物线y^2 =2px (p>0)的焦点为F,经过点F的直线交抛物线于A、B两点,点C在抛物线的准线上,且BC‖x轴.设直线AB的方程为x=my+p/2则由x=my+p/2与y... -
谢闵之17749878616 ______[答案] 点A的横坐标为y1^2/2p 这是因为设的A的纵坐标为y1,再代入抛物线得到的.

俟世韩1342如果y2+my+4是某个多项式的平方,那么m值一定是( )A.2B.4C.±2D.± -
谢闵之17749878616 ______ ∵y2+my+4是完全平方式,∴my=±2*2?y=±4y,解得m=±4. 故选D.

俟世韩1342设m∈R,过定点A的动直线x+my=0和过定点B的直线mx - y - m+3=0交于点P(x,y),则|PA|+|PB|的最大值是___. -
谢闵之17749878616 ______[答案] 由题意可得动直线x+my=0过定点A(0,0), 直线mx-y-m+3=0可化为(x-1)m+3-y=0, 令 x-1=03-y=0可解得 x=1y=3,即B(1,3), 又1*m+m*(-1)=0,故两直线垂直, ∴|PA|2+|PB|2=|AB|2=10, 由基本不等式可得10=|PA|2+|PB|2 =(|PA|+|PB|)2-2|PA||PB| ...

俟世韩1342已知有向线段PQ的起点P和终点Q的坐标分别为( - 1,1)和(2,2),若直线l:x+my+m=0与PQ的延长线相交,则m的取值范围是______. -
谢闵之17749878616 ______[答案] 由题知kPQ= 2−1 2−(−1)= 1 3, 直线x+my+m=0过点M(0,-1). 当m=0时,直线化为x=0,一定与PQ相交,所以m≠0, 当m≠0时,kl=- 1 m,考虑直线l的两个极限位置. (1)l经过Q,即直线l1,则kl1= 2−(−1) 2−0= 3 2; (2)l与PQ平行,即直线l2,则kl...

俟世韩1342I am high up in a plane.You are calling out my name这句话是设么意思,急及 -
谢闵之17749878616 ______ 我在高高飞行的飞机上.你在大声喊叫我的名字.