1.

Let t be a ral number satifying 2t ^(3) -9t ^(2) + 30 -lamda =0 where t =x + 1/xand lamda in R. If the cubic has four real and distinct solutions for x then exhustive set of values of lamda be :

Answer»

`lamda in (3,10)`
` lamda in {3,10}`
`lamda in (-oo, -22 ) UU (10, oo)`
None of these

ANSWER :A


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