one+needed+when+making

雷凌狗3605设ω=( - 1+√3 i)/2 ,试求下列各值 (1)ω^2 -
滑实宗15576365611 ______ ω=(-1+√3i)/2 ω²=[(-1+√3i)/2]²=(1-3-2√3i)/4=(-1-√3i)/2 ω³=ω*ω²=(-1+√3i)/2*(-1-√3i)/2=11+ω+ω²=1+(-1+√3i)/2+(-1-√3i)/2=01/ω=ω²/ω³=(-1-√3i)/2(ω+2ω²)²+(2ω+ω²)²=ω+4ω^4+4ω³+4ω²+ω^4+4ω³=ω+4ω+4+4ω²+ω+4=4ω²+6ω+8=4...

雷凌狗3605need+动词 need+名词 need本身做动词 各造一个句子,要快!!! -
滑实宗15576365611 ______ need+动词:You needn't come again. need+名词:I need lots of money. need本身做动词:You need to see a doctor.

雷凌狗3605求证(1 - w+w^2)(1+w - w^2)=4 -
滑实宗15576365611 ______ (1-w+w^2)(1+w-w^2)=[1-(w-w^2)][1+(w-w^2)]=1-(w^2-w)^2 怎么可能等于4呢

雷凌狗3605谁知道《THE ONE 》后街男孩的歌词啊 ? -
滑实宗15576365611 ______ The One 歌手:Backstreet Boys Backstreet Boys -- The One I' be the one...I guess you were lost when I met you Still there were tears in your eyes So out of trust and I knew No more than mysteries and lies There you were,wild and free Reachin' out ...

雷凌狗3605利用w^3=1计算((根号3+i)/2 )^6+((负根号+i)/2 )^6 -
滑实宗15576365611 ______ 3=(-1±√3i)/2 也即有 [(-1+√3i)/2]^3=1① 及 [(-1-√3i)/2]^3=1② 由①得 [(-i-√3)/2]^3=i^3 由②得 [(-i+√3)/2 ]^6=[(-i-√3)/2 ]^6+[(-i+√3)/2]^3=i^3 故 [(√3+i)/2 ]^6+[(-√3+i)/解:w^3=10=w^3-1=(w-1)(w^2+w+1) 解得w1=1,w2

雷凌狗36051+z+z^2=0,则1+z+z^2+…+z^100= -
滑实宗15576365611 ______ 1+z+z^2+...+z^100=(1+z+z^2)+z^3(1+z+z^2)...+z^96(1+z+z^2)+z^99+z^100+z^101-z^101=0+0+...+0+z^99(1+z+z^2)-z^101=0-z^101=-z^101(1-z)(1+z+z^2)=01-z^3=0 z^3=1 故z^101=z^(3*33+2)=(z^3)^33*z^2=z^2 z^2=-(1+z) z^2+z+1=0 解得z=-1/2(+/-)根号3/2i 故原式=-z^2=1+z=1/2(+/-)根号3/2i

雷凌狗3605已知f(x)=cos(πx/3),求f(1)+f(2)+.f(2010)=向量a=(cos πx/w,sinπx/w) b=(cosy,siny) w大于0,0≤y<2π,函数f(x)=a*b为偶函数.求y函数在(0,3)上市单调递减,当... -
滑实宗15576365611 ______[答案] 这是个周期函数,以6为周期.当x取1~6时,f(x)为0.5、-0.5、-1、-0.5、0.5、1,每个周期内函数值和为0,2010除以6正好有335个周期,所以最终答案为0

雷凌狗3605如果令A、B、C、D……X、Y、Z这26个英文字母,分别等于百分之1、2、3、4、……HARD WORK(努力工作):H+A+R+D+W+O+R+K=8+1+18+4+23+... -
滑实宗15576365611 ______[答案] ATTITUDE(态度)=A+T+T+I+T+U+D+E=1+20+20+9+20+21+4+5=100,你对生活的态度是最重要的.

雷凌狗3605若实系数一元二次方程x^2+x+1=0的一个根为w,则w^2+w= -
滑实宗15576365611 ______ x=w 所以w^2+w+1=0 w^2+w=-1

雷凌狗3605xy,zw各表示一个两位数,若xy+zw=139,则 x+y+z+w=______. -
滑实宗15576365611 ______[答案] x+y+z+w=9+13=22. 故答案为:22.