(a, 0), (0, b) এবং (1, 1) বিন্দু তিনটি সমরেখ হওয়ার শর্ত কোনটি?

A \( a + b = 1 \)

B \( \frac{1}{a} + \frac{1}{b} = 1 \)

C \( a - b = 1 \)

D \( \frac{1}{a} - \frac{1}{b} = 1 \)

Solution

Correct Answer: Option B

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