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Find the following limits:lim(xrarr0)(e^...

Find the following limits:`lim_(xrarr0)(e^x-e^(-x))/(xcosx)`

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`lim_(xrarr0)(e^x+e^(-x))/(xcosx)` (0/0 form)
`=lim_(xrarr0)(e^x+e^(-x))/(cosx-sinx)=2/1=2`
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