A) \[a\sqrt{2}-1\]
B) \[a\sqrt{2}+1\]
C) 0
D) a
Correct Answer: A
Solution :
\[|z-{{z}_{0}}|=r\], represents a circle so the least modulus of \[z\]is \[|{{z}_{0}}{{|}^{2}}-r\]
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