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4-1.Complex numbers
normal
જો $\left| {z - 3i} \right| \le 5$ હોય તો $| z + 2 |$ ની ન્યૂનતમ કિમત મેળવો
A
$0$
B
$2$
C
$5-\sqrt {13}$
D
$1$
Solution

let $z+2=z^{\prime}$
$\left|z^{\prime}-2-3 i\right| \leq 5$
$\Rightarrow\left|z^{\prime}\right|_{\min }=0$
Standard 11
Mathematics