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Saturday, January 27, 2007
"GRE ALGEBRA QUESTION OF THE DAY"
For what range of values of ‘x’ will the inequality 15x-(2/x)>1? A) x> 0.4 B) x< (1/3) C) -(1/3) <>(15/2) D) -(1/3) (2/5) E) x< -(1/3) and x>(2/5)
Its A coz value of the statement at x=0.4 is 1 and therefore anyvalue greater than 0.4 will increase the value of equation. hence the satisfactory results is reached.
its A....can not be E(check for x=-1)..it doesnt satisfy...
ReplyDeletea
ReplyDelete=> 15×2-x-2>0
ReplyDelete=>(3x+1)(5x-2)>0
therEfore roots dont lie between the two values 2/5 and -1/3….
option D) is the correct ans.
Its A coz value of the statement at x=0.4 is 1 and therefore anyvalue greater than 0.4 will increase the value of equation.
ReplyDeletehence the satisfactory results is reached.