已知z1,z2是复数,下列结论错误的是()A.若|z1-z2|=0,则.z1=.z2B.若z1=.z2,则.z1=z2C.若|z1|=|z2|,则z1•.z1=z2.z2D.若|z1|=|z2|,则z12=z22
已知z1,z2是复数,下列结论错误的是( )
A. 若|z1-z2|=0,则
=z1 z2
B. 若 z1=
,则z2
=z2z1
C. 若|z1|=|z2|,则z1•
=z2z1 z2
D. 若|z1|=|z2|,则z12=z22
. |
z1 |
. |
z2 |
B.z1=
. |
z2 |
. |
z1 |
C.|z1|=|z2|,又|z1|2=z1•
. |
z1 |
. |
z2 |
. |
z1 |
. |
z2 |
D.若|z1|=|z2|,取z1=1,z2=i,则z12≠
z | 2 2 |
故选:D.
数学填空题,但要写出过程若x:y:z=2:(-1):1,则x+2y-z/2x-y+z=若k=a-2 2020-05-17 …
填空:分式的约分和通分约分:-16b^2y^2/20ay^3=-1-x/x^2+2x+1=a^y- 2020-06-06 …
若复数z的虚部不为零,且z^3+z+1=0,则A.|z|<1B.|z|=1C.1<|z|<根号2D 2020-06-12 …
请帮我看一下哪里做错了!若复数z满足z(i+1)=√2,则|z|=?我是这样解的、设z=a+bi, 2020-06-21 …
设有下面四个命题p1:若复数z满足1z∈R,则z∈R;p2:若复数z满足z2∈R,则z∈R;p3: 2020-07-20 …
已知复数z=(m-1)(m+2)+(m-1)i(m∈R,i为虚数单位).(1)若z为纯虚数,求m的 2020-08-01 …
1.若xy/(x+y)=1,yz/(y+z)=2,zx/(z+x)=3,则x的值是.2.若x+y+z 2020-10-31 …
1.已知a方+a-1=0,求a的四次+3(a的三次)-3a+52.若a方+b方=1,c方+d方=1, 2020-10-31 …
若x:y:z=2:3:4,则下列各式中正确的是A.2x=3y=4zB.x=2,y=3,z=4C3x= 2020-10-31 …
一.若分式(4x+8)/(x^2-4)为整数,求x的整数值二.若x/2=y/3=z/4,求(x^2+ 2020-10-31 …