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Differentiate the following function from first principles: `e^(sqrt(cotx))`

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We will differentiate the given function using first priciple.
Here, `f(x) = e^sqrt(cotx)`
`:. f'(x) = Lim_(h->0) (f(x+h) - f(x))/h`
`= Lim_(h->0) (e^sqrt(cot(x+h)) - e^sqrt(cotx))/h`
`= e^sqrt(cotx) Lim_(h->0) (e^(sqrt(cot(x+h)) - sqrt(cotx)) -1)/h`
`= e^sqrt(cotx) Lim_(h->0) (e^(sqrt(cot(x+h)) - sqrt(cotx))-1)/h**(sqrt(cot(x+h)) - sqrt(cotx))/(sqrt(cot(x+h)) - sqrt(cotx))`
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