点(1,-1,1)在曲面[]上,该曲面是[].
A: x2+y2-2z=0
B: x2-y2=z
C: x2+y2=0
D: z=ln(x2+y2)
A: x2+y2-2z=0
B: x2-y2=z
C: x2+y2=0
D: z=ln(x2+y2)
举一反三
- 点(1,-1,1)在曲面[]上,该曲面是[]. A: x2+y2-2z=0 B: x2-y2=z C: x2+y2=0 D: z=ln(x2+y2)
- 点(1,-1,1)在曲面[]上,该曲面是[]. A: x2+y2-2z=0 B: x2-y2=z C: x2+y2=0 D: z=ln(x2+y2)
- 点(1,-1,1)在曲面[]上,该曲面是[]. A: x2+y2-2z=0 B: x2-y2=z C: x2+y2=0 D: z=ln(x2+y2)
- 点(1,-1,1)在曲面[]上,该曲面是[]. A: x2+y2-2z=0 B: x2-y2=z C: x2+y2=0 D: z=ln(x2+y2)
- 点(1,-1,1)在曲面[]上,该曲面是[]. A: x2+y2-2z=0 B: x2-y2=z C: x2+y2=0 D: z=ln(x2+y2)