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If limx?0 (cos x + a sin bx)1/x = e2 . Prove that ab = 2.

Profile image of roopeshreddy
12 Years agoGrade upto college level
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1 Answer

Profile image of Sourabh Singh
10 Years ago
Hii

Use the expansion of cosx and sinx .
you will get the answer after cancelling terms such that constant part becomes zero.