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TS EAMCET · Maths · Complex Number

The minimum value of \(|z-1|+|z-5|\) is

  1. A 5
  2. B 4
  3. C 3
  4. D 2
Verified Solution

Answer & Solution

Correct Answer

(B) 4

Step-by-step Solution

Detailed explanation

\[ \begin{aligned} & \because|(z-1)-(z-5)| \leq|(z-1)|+|(z-5)| \\ & \therefore \quad|z-1-z+5| \leq|z-1|+|z-5| \\ & \Rightarrow \quad|4| \leq|z-1|+|z-5| \\ & \Rightarrow \quad|z-1|+|z-5| \geq 4 \end{aligned} \]