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Question

If esinxesinxa=0 has no real solution, then


A

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B

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C

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D

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Solution

The correct option is A


Let t = esinxt[1e,e]

Given equations reduces to t2at1=0

If parent equation has no solution , then derived equation has no root [1e,e]

For t2at1=0 0=a2+4>0 a R also

If it has atleast one root in

= (1e,0) then (e2ae1)(1e2fracae1)0

= { (e21)ae}{(e21)+ae}0

|a| e21e


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