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nikhilsrl
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If x and y are positive, which of the following must be greater that 1/sqrt(x + y)?
I. sqrt(x + y)/2x
II. [sqrt(x) + sqrt(y)]/(x + y)
III. [sqrt(x) - sqrt(y)]/(x + y)
a) None
b) I only
c) II only
d) I and II
e) II and III
OA is D. Is there an easier to solve this than using numbers.
I. sqrt(x + y)/2x
II. [sqrt(x) + sqrt(y)]/(x + y)
III. [sqrt(x) - sqrt(y)]/(x + y)
a) None
b) I only
c) II only
d) I and II
e) II and III
OA is D. Is there an easier to solve this than using numbers.
