limits question........
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\[\lim_{x \rightarrow 0} (e ^{^{tanx}} - e ^{x})/tanx - x\]
@pooja195 @Preetha
@Ashleyisakitty
@jim_thompson5910
@lionheart
\[is~your ~question~like ~this?\lim_{x \rightarrow 0}\frac{ e ^{\tan x}-e^x }{ \tan x-x }\]
yupp...
You're going to need to use l'hopitals :)
tan (0) = 0 which means this is indeterminate
then u need to make it determinant form...........the given answer is 1 but i am unable to solve it
\[\lim_{x \rightarrow 0}\frac{ e ^{\tan x}-1+1-e^x }{ \tan x-x }\] \[\lim_{x \rightarrow 0}\frac{ \frac{ e ^{\tan x}-1 }{ \tan x }\times \tan x }{ \tan x-x }-\lim_{x \rightarrow 0}\frac{ e^x-1 }{ \tan x-x }\] \[=\lim_{x \rightarrow 0}\frac{ \frac{ e ^{\tan x}-1 }{ \tan x } \times \frac{ \tan x }{ x } }{ \frac{ \tan x }{ x } -\frac{ x }{ x }}-\lim_{x \rightarrow 0}\frac{ \frac{ e^x-1 }{ x } } { \frac{ \tan x }{ x } -1}\]
\[\lim_{x \rightarrow 0}\frac{ e ^{\tan x}-1 }{ \tan x }=1\]
\[\lim_{x \rightarrow 0}\frac{ \tan x }{ x }=1\]
\[\lim_{x \rightarrow 0}\frac{ e^x-1 }{ 1 }=1\]
now you can complete it.
thanks a lot..
Wolfram agrees
i think we have done wrong we have to use L hospital,s rule in between but sorry now i am going to bed.
ur answer is correct lol.........
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