已知:Ia+1I+Iab+2I=0,求1/(a+1)(b+1)+1/(a+2)(b+2)+.+1/(a+2008)(b+
已知Ia-b+3I+(2a+b)2=0,求(a+1/2)2-(a-1/2b)2-a2(-2ab)2的值
若Ia-5I+1/2b^2+b+1/2=0求a b的值
已知a.b是有理数,且满足Ia-1I+I2-bI=0,求a-b的值.
已知Ia+1I+(a+b-2)²=0,化简ab-2{ab-[3a²b-(4ab²+0.5a
已知向量a,b满足:IaI=1,IbI=2,Ia-bI=根号七,求Ia-2bI
已知向量A(1,1),B(2,Y),若IA+BI=A.B,求Y
b向量,满足IaI=2,IbI=1,Ia-bI=2求a*b,Ia+bI的值
2 2 2 2已知Ia+1l与l2a+bl互为相反数,试求整式3{a-b} -5{a-b} +3{a+b}+{a-b}
已知arg(-2+i)=a,arg(-1-3i)=b,求a+b
若Ia+2I+(b-1)的二次方=0,求(a+b)的2010次方的值(写出步骤)
设a,b为实数,若复数1+2ia+bi=1+i,则( )
已知A是实数,B是纯虚数,且满足(2-2A)+(1-3B)I=B-I,求A,B