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the equation   cosß  =  t + a⁄t , t € R ( t ≠ 0) has a real solution of ß.Then the boundary satisfied by   a   is

7 years ago


Answers : (1)


H i Prakhar,


|t + a⁄t| < 1


t2+ a - t < 0 if t>0


t2+ a - t > 0 if t<0


Now use inequalities and the graph of y = x2+ a - x

to find out the range of values of a




7 years ago

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