过点M0(-1,1)且与曲线2ex-2cosy-1=0上点(0,π/3)的切线相垂直的直线方程是:()
A . y-π/3=(/2)x
B . y-π/3=-(2/)x
C . y-1=(/2)(x+1)
D . y-1=-(2/)(x+1)
[单选题]过点M1(0,−1,2)和M2(1,0,1)且平行于z轴的平面方程是( )。A.x-y=0B.C.x+y-1=0D.x-y-1=0
[单选题]过点(1,0,0)与(0,1,0),且与z=x2+y2相切的平面为( )。A.z=0与x+y?z=1B.z=0与2x+2y?z=2C.y=x与x+y
[单选题]已知平面π过点(1,1,0)、(0,0,1)、(0,1,1),则与平面π垂直且过点(1,1,1)的直线的对称方程为()。A . B . C . D .
[单选题]已知直线L1过点M1(0,0,-1)且平行于x轴,L2过点M2(0,0,1)且垂直于xOz平面,则到两直线等距离点的轨迹方程为( ).A.B.C.D
[单选题]已知直线L1过点M1(0,0,-1)且平行于x轴,L2过点M2(0,0,1)且垂直于xOz平面,则到两直线等距离点的轨迹方程为( ).A.B.C.D
[单选题]已知直线L1过点M1(0,0,-1)且平行于x轴,L2过点M2(0,0,1)且垂直于xOz平面,则到两直线等距离点的轨迹方程为( ).A.B.C.D
[单选题]已知直线L1过点M1(0,0,-1)且平行于x轴,L2过点M2(0,0,1)且垂直于xOz平面,则到两直线等距离点的轨迹方程为( )。A.x2+y2
[单选题]已知直线L1过点M1(0,0,-1)且平行于x轴,L2过点M2(0,0,1)且垂直于xOz平面,则到两直线等距离点的轨迹方程为( )。A.x2+y2
[单选题]已知直线L1过点M1(0,0,-1)且平行于x轴,L2过点M2(0,0,1)且垂直于xOz平面,则到两直线等距离点的轨迹方程为( )。A.x2+y2
[单选题]已知直线L1过点M1(0,0,-1)且平行于X轴,L2过点M2(0,0,1)且垂直于XOZ平面,则到两直线等距离点的轨迹方程为()。A.B.C.D.