let's assume that f(t) is a real function on [a,b], n is a positive integer(adsbygoogle = window.adsbygoogle || []).push({});

(n-1)th derivative of f is continuous on [a,b], (n)th derivative exists for all t in (a,b)

1. Then can we say that (n-2)th derivative of f is continuous on [a,b]?

2. (n-2)th derivative of f is defined on a and b?

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# On derivatives of higher order

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