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If x2n +1/x2n =k Let xn -1/xn =y (xn +1/xn)2 = x2n +1/x2n +2 (xn +1/xn)2 =k+2 Let xn +1/xn =z z2 = k+2 … (1) Using the identity for the square of a difference: y² = z2-4 Since z2 =k+2: y² = (k+2)-4 y² = k -2 Therefore- y = √ k-2 xn -1/xn =√ (k-2)
Select the set in which the numbers are related in the same way as are the numbers of the following sets.
(NOTE : Operations should be performed ...
Select the related alternative from the given:
Spring: Summer :: _______.
Three of the following four number pairs are alike in some manner and one is different. Identify the one which is different.
Select the option that is related to the third term in the same way as the second term is related to the first term.
GAYH : IYWJ :: FBAO : ______
Select the option that is related to the third letter-cluster in the same way as the second letter-cluster is related to the first letter-cluster.
...If 38 @ 9 = 66 and 63 @ 43 = 122, then 29 @ 57 = '?'.
F/N : 30/182 : : H/P : ?
Select the set in which the numbers are NOT related in the same way as are the numbers of the following set. (NOTE: Operations should be performed on th...
If 83 × 24 = 5, 62 × 15 = 2, 45 × 33 = 3, then 96 × 42 = ?
Select the option that is related to the third term in the same way as the second term is related to the first term.
MODE : NLWV :: JAIL : ?
