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If lim x tends to 0 , (cos x +a sin bx)^1/x = e^2 , prove that ab=2

AnupamDavidSamrat , 11 Years ago
Grade 11
anser 1 Answers
NANDA

Last Activity: 11 Years ago

lim X->0 (1+x)^1/x =e^1 (1+asinbx)^1/x=e^k k=limx->0 asinbx/x=ab k=2(given) hence,ab=2
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