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Consider the set the of hyperbola `xy = k, k in R`. Let `e_(1)` be the eccentricity when `k = 4` and `e_(2)` be the eccentricity when `k = 9` then `e_

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Consider the set the of hyperbola `xy = k, k in R`. Let `e_(1)` be the eccentricity when `k = 4` and `e_(2)` be the eccentricity when `k = 9` then `e_(1) - e_(2) =`
A. `-1`
B. `0`
C. `2`
D. `3`
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Correct Answer - B
`e_(1) = sqrt(2) , e_(2) = sqrt(2)`
`e_(1) = e_(2) = sqrt(2) - sqrt(2) = 0`
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