A) \( \Large 1-\sqrt{2} \) |
B) \( \Large 1+\sqrt{2} \) |
C) \( \Large 1\pm \sqrt{2} \) |
D) none of these |
B) \( \Large 1+\sqrt{2} \) |
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.