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Mathematics Question on types of differential equations

The value of x+x2−1x−x2+1+x+x2+1x−x2−1\frac{x+\sqrt{x²-1}}{x-\sqrt{x²+1}} +\frac{x+\sqrt{x²+1}}{x-\sqrt{x²-1}} is

A

0

B

1

C

-1

D

None of these

Answer

0

Explanation

Solution

The correct option is (A): 0