micky2100 Posted September 22, 2008 Share Posted September 22, 2008 what is the value of x 1)x pow2-y pow 2=0 2) x/y+y/x=0 1)x pow2=y pow2 x=+y or x=-y insuff 2) x/y=-y/x x pow 2=-y pow 2 x =sqrt[(-1)*y pow 2] x=sqrt(-1)* y or x=sqrt(-1) *(-y) this is also insuff but the ans is 2 is suff to ans the qst Quote Link to comment Share on other sites More sharing options...
bose Posted September 22, 2008 Share Posted September 22, 2008 i think it is E x^2-y^2=0 insuff x/y+y/x=x^2+y^2=0insuff here xy0 add 1 and 2 x^2=0 so x=0 but x cannot be 0 as xy0 assumed in stmt2 Quote Link to comment Share on other sites More sharing options...
sid_j Posted September 25, 2008 Share Posted September 25, 2008 hmm..should be E.. its imp not to missxy0 Quote Link to comment Share on other sites More sharing options...
Nyssa Posted September 25, 2008 Share Posted September 25, 2008 IMO B Stat 2 is x/y + y/x = 0 x pow 2= - y pow 2 this is true only if y = 0 Hence x = 0 Quote Link to comment Share on other sites More sharing options...
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