The value \( \Large 2+\frac{1}{2+\frac{1}{2+........\infty}} \)

A) \( \Large 1-\sqrt{2} \)

B) \( \Large 1+\sqrt{2} \)

C) \( \Large 1\pm \sqrt{2} \)

D) none of these

Correct answer:
B) \( \Large 1+\sqrt{2} \)

Description for Correct answer:

Let \( \Large x=2+\frac{1}{2+\frac{1}{2+...\infty}} \)

=> \( \Large x = 2+\frac{1}{x} => x^{2}-2x-1=0 \)

=> \( \Large x=\frac{2\pm \sqrt{4+4}}{2} \)

=> \( \Large x=1\pm \sqrt{2} \)

But the value of given expression cannot be negative or less than 2, therefore \( \Large 1+\sqrt{2} \) is required answer.



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