1.

Let `S=S_1 cap S_2 cap S_3` where `S_1={z in C:|z| lt 4"}",S_2={z in C: lm[(z-1+sqrt(3)i)/(1-sqrt(3)i)]gt0}` and `S_3:{z in : Re z lt 0 }` Let z be any point in `A cap B cap C` The `|z+1-i|^2+|z-5-i|^2` lies betweenA. 25 and 29B. 30 and 34C. 35 and 39D. 40 and 44

Answer» Correct Answer - C
`|z+1-i|^2+|z-5-i|^2`
= `(x+1)^2 +(y-1)^2+(x-5)^2+(y-1)^2`
`=2(x^2+y^2-4x-2y)+28`
`=2(4)+28=36 " "[ because x^2+y^2-4x-2y =4]`


Discussion

No Comment Found

Related InterviewSolutions