1.复数Z1=3+4i,Z2=t+i Z1,Z2拔为实数,求t2.a∈R,Z1=a-i/1-i,Z2=Z1*i(1)若Z1=-1,求实数a值(2)若a>0且IMZ2-REZ2=3 求|Z2|3.Z为虚数|Z|=根号5,若Z^2-2Z拔为实数(1)求复数Z(2)若Z的虚部为正数,且W=Z+4sinx*1(x∈R),求|W|的取值
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1.复数Z1=3+4i,Z2=t+i Z1,Z2拔为实数,求t2.a∈R,Z1=a-i/1-i,Z2=Z1*i(1)若Z1=-1,求实数a值(2)若a>0且IMZ2-REZ2=3 求|Z2|3.Z为虚数|Z|=根号5,若Z^2-2Z拔为实数(1)求复数Z(2)若Z的虚部为正数,且W=Z+4sinx*1(x∈R),求|W|的取值
1.复数Z1=3+4i,Z2=t+i Z1,Z2拔为实数,求t
2.a∈R,Z1=a-i/1-i,Z2=Z1*i
(1)若Z1=-1,求实数a值
(2)若a>0且IMZ2-REZ2=3 求|Z2|
3.Z为虚数|Z|=根号5,若Z^2-2Z拔为实数
(1)求复数Z
(2)若Z的虚部为正数,且W=Z+4sinx*1(x∈R),求|W|的取值范围
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1.复数Z1=3+4i,Z2=t+i Z1,Z2拔为实数,求t2.a∈R,Z1=a-i/1-i,Z2=Z1*i(1)若Z1=-1,求实数a值(2)若a>0且IMZ2-REZ2=3 求|Z2|3.Z为虚数|Z|=根号5,若Z^2-2Z拔为实数(1)求复数Z(2)若Z的虚部为正数,且W=Z+4sinx*1(x∈R),求|W|的取值
8.x中2 = -1 X =±I∵II互惠
∴X1 +1 / X2 = I +1 /( - )= 2I或x1 +1 / X2 =-I +1 / I = -2i的
所选D
9.1 =(-1)2 =(x + 1的/ x)的2 = x 2的2 1/2∴×2 1/2 = -1
选择?
11的实系数二次方程两个虚根是复数共轭,
两个虚根可以被设置为一个已知的方程因此,±双向
2的绝对值= 2之间的差| B | =∴|B?| = 3/2
2的它和是相等的时间系数的相反数,即,图2a = 2√2∴=√2 M = 2集成= 2 + B 2 = 2 +9 / 4 = 17/4
12已知方程另一根2-3I
-B / 2 =(2 +3 I)+ (2-3I)= 4,∴B = -8
C / 2 =(2 +3 I)(2-3I)13所以Z = X +毅,代入已知方程并组织
(X 2-Y 2 +5)+(2XY 12)I = 0 = 13∴C = 26
∴X 2-Y 2 +5 = 0 - - (1)的
2XY 12 = 0 ----(2)
同时进行(1)(2)解决方案,x = 2时,为y = -3或x = -2,为y = 3
Z1 = 2-3i公司,Z2 = -2 +3我
14.ORDER Z = X + yi和代入原方程-X-易
√(x 2 + y 2)= 1 +2我
√(x 2 + y 2)-X = 1-Y = 2
解决方案X = 3/2,Y = -2
∴Z = 3/2-2i
15.假设,事实上,数根的,
2 + +2 P-(2A + 1)= 0
∴2A +1 = 0 -------(1 )
2 + +2 P = 0 -----(2)
(1)= -1 / 2
入(2)P = 1/8
(1)∵
a-i
1-i
=-i,
∴a-i=-i•(1-i)=-1-i,解得 a=-1.…(2分)
(2)z2=z1•i=
a-i
1-i
•i=
1
2
(1-a)+
1
2
(a+1)•...
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(1)∵
a-i
1-i
=-i,
∴a-i=-i•(1-i)=-1-i,解得 a=-1.…(2分)
(2)z2=z1•i=
a-i
1-i
•i=
1
2
(1-a)+
1
2
(a+1)•i①…(2分)
∵Imz2-Rez2=3,
∴
1
2
(1+a)-
1
2
(1-a)=3,解得a=3…(2分)
将a=3代入①得,z2=-1+2i…(2分)
则|z2|=
1+4
=
5 …(2分)
收起
8.x中,2 = -1 X =±∵II区的我
∴X1 +1 / X2 = I +1 /( - )= 2I或x1 +1 / X2 =-I +1 / I = -
所选D
2i是9.1 =(-1)2 =(+ 1 / x)的2 = x 2的2 1/2∴×2 1/2 = -1 BR />选择吗?
11二次两个虚根的实系数的复共轭,±双向
两个虚...
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8.x中,2 = -1 X =±∵II区的我
∴X1 +1 / X2 = I +1 /( - )= 2I或x1 +1 / X2 =-I +1 / I = -
所选D
2i是9.1 =(-1)2 =(+ 1 / x)的2 = x 2的2 1/2∴×2 1/2 = -1 BR />选择吗?
11二次两个虚根的实系数的复共轭,±双向
两个虚根可以被设置为公知的式(2)= 2之间的差的绝对值| B | = ∴|B?? | = 3/2
2,是到时间因素同等数量相对,即图2a = 2√2∴=√2 M = 2集成= 2 + 2 = 2 +9 / 4 = 17/4
12方程的2-3I
-B / 2 =(2 +3 I)+(2-3I)= 4∴B = -8
/> C / 2 =(1 + I)(2-3I)13 Z = X +毅,代入已知方程组织
(X 2-Y 2 +5)+(2XY 12)I = 0 = 13∴C = 26
∴X 2-Y 2 +5 = 0 - (1),
2XY 12 = 0 ----(2)
(1) ,(2)溶液在相同的时间,x = 2时,为y = -3或x = -2,y = 3的
Z1 = 2-3i中,Z2 = -2 +3余
/> 14。 ORDER Z = X + yi和代入原方程X-易
√(x 2 + y 2)= 1 +2我
√(X 2 + Y 2) -X = 1,Y = 2
解决方案X = 3/2,Y = -2
∴Z = 3/2-2i
15。假定的是,事实上,数根
2 + 2 P-()= 0
∴2A +1 = 0 -------(1)
2 + +2 P = 0 -----(2)
(1)= -1 / 2
入(2)P = 1/8
收起
8.x中,2 = -1 X =±∵II区的我
∴X1 +1 / X2 = I +1 /( - )= 2I或x1 +1 / X2 =-I +1 / I = -
所选D
2i是9.1 =(-1)2 =(+ 1 / x)的2 = x 2的2 1/2∴×2 1/2 = -1 BR />选择吗?
11二次两个虚根的实系数的复共轭,±双向
两个虚...
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8.x中,2 = -1 X =±∵II区的我
∴X1 +1 / X2 = I +1 /( - )= 2I或x1 +1 / X2 =-I +1 / I = -
所选D
2i是9.1 =(-1)2 =(+ 1 / x)的2 = x 2的2 1/2∴×2 1/2 = -1 BR />选择吗?
11二次两个虚根的实系数的复共轭,±双向
两个虚根可以被设置为公知的式(2)= 2之间的差的绝对值| B | = ∴|B?? | = 3/2
2,是到时间因素同等数量相对,即图2a = 2√2∴=√2 M = 2集成= 2 + 2 = 2 +9 / 4 = 17/4
12方程的2-3I
-B / 2 =(2 +3 I)+(2-3I)= 4∴B = -8
/> C / 2 =(1 + I)(2-3I)13 Z = X +毅,代入已知方程组织
(X 2-Y 2 +5)+(2XY 12)I = 0 = 13∴C = 26
∴X 2-Y 2 +5 = 0 - (1),
2XY 12 = 0 ----(2)
(1) ,(2)溶液在相同的时间,x = 2时,为y = -3或x = -2,y = 3的
Z1 = 2-3i中,Z2 = -2 +3余
/> 14。 ORDER Z = X + yi和代入原方程X-易
√(x 2 + y 2)= 1 +2我
√(X 2 + Y 2) -X = 1,Y = 2
解决方案X = 3/2,Y = -2
∴Z = 3/2-2i
15。假定的是,事实上,数根
2 + 2 P-()= 0
∴2A +1 = 0 -------(1)
2 + +2 P = 0 -----(2)
(1)= -1 / 2
入(2)P = 1/8
收起