If $|z+4| \leq 3$, then the maximum value of $|z+1|$ is

If $|z+4| \leq 3$, then the maximum value of $|z+1|$ is
  1. $4$
  2. $10$
  3. $6$
  4. $0$

Solution

From the Argand diagram maximum value of $|z+1|$ is $6$. Alternative: $\begin{aligned} & |z+1|=|z+4-3| \\ & \leq|z+4|+|-3|=6. \end{aligned}$

Asked in: JEE Main 2007

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