(1,-1) বিন্দু থেকে 2x² +2y²-x+3y +1= 0 স্পর্শকের দৈর্ঘ্য কত?

A \( \frac{1}{\sqrt{3}} \)

B \( \sqrt{2} \)

C \( \frac{1}{\sqrt{2}} \)

D \( \sqrt{\frac{23}{2}} \)

Solution

Correct Answer: Option C

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