Is x > y?
1) x^2 > y^2
2) y - y^2 > 0
oa E
i agree with oa but i don't agree we explanation..
explanation : From II, we cannot determine if Y is positive or not.
how negative number can satisfy second statement ?... i don't get that ...pls explain
x>y?
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You're right.mariah wrote:Is x > y?
1) x^2 > y^2
2) y - y^2 > 0
oa E
i agree with oa but i don't agree we explanation..
explanation : From II, we cannot determine if Y is positive or not.
how negative number can satisfy second statement ?... i don't get that ...pls explain
Statement II definitely tells us that y is positive.
y - y^2 > 0 (first add y^2 to both sides)
y>y^2
Since y^2 must be greater than or equal to 0, we now know that y must be greater than or equal to 0 (i.e., y is positive)