Inverse trigno problems........

IIT JEE Forum › Trignometry questions › Inverse trigno problems........

i have some unsolved questions in inverse trigno..........posting here.......

Q1 Find range of values of a if sum of series \sum_{n=1}^{infinity}{(\frac{sec^{-1}\sqrt{\left|x \right|}+cosec^{-1}\sqrt{\left|x \right|}}{\pi a}})^{n}

is finite where \left|x \right|\geq 1;a>0

#Mathematics #Trignometry

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38 Answers

1
2

24

eureka123 ·2009-03-16 11:07:26

@ mani...never say never..................jee is having a habit to surprise students

and ans is n=3..........exact........
recheck urs

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24

eureka123 ·2009-03-16 11:08:20

@ akand i dont have the answer for that ques......plz post the method.....[1][1]

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1

MATRIX ·2009-03-16 11:11:14

@ eureka thanks yaar.....

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Akand ·2009-03-16 11:12:04

5.......... is it
x=sin((pi/2Â±piâˆš77/12.27+4a/3)/2)

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24

eureka123 ·2009-03-16 11:13:11

Ans 5 is Zero solutions,[11][11][7]

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11

Mani Pal Singh ·2009-03-16 11:13:36

âˆš3Xâˆ©is an irrational number and this question doesnt demand gr88 comments
it was the most easiest question
so no behas on it[1]

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MATRIX ·2009-03-16 11:14:15

hey akand hmm im havin doubt da in ur solution.....plz recheck it....not sure..........thats y.......

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11

Mani Pal Singh ·2009-03-16 11:15:30

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Your Answer

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