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bose · 2008 September 22nd, 05:48 PM

i think it is E
x^2-y^2=0 insuff
x/y+y/x=x^2+y^2=0insuff here xy<>0
add 1 and 2 x^2=0 so x=0 but x cannot be 0 as xy<>0 assumed in stmt2

2008 September 22nd, 05:48 PM	#2 (permalink)
bose Testmagic user Join Date: Dec 2006 Posts: 1,522	i think it is E x^2-y^2=0 insuff x/y+y/x=x^2+y^2=0insuff here xy<>0 add 1 and 2 x^2=0 so x=0 but x cannot be 0 as xy<>0 assumed in stmt2