1.

f_(n)(x)=e^(f_(n-1^(x))) for all n inN and f_0(x) = x , then (d)/(dx){f_(n)(x)} is

Answer»

`f_(n)(X)(d)/(dx){f_(n-1)(x)}`
`f_(n)(x)f_(n-1)`
`f_(n)(x)f_(n-1)(x)....f_(2)(x).f_(1)(x)`
none of these

Answer :A::C


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