Question #d7d5a
1 Answer
Dec 10, 2016
Explanation:
The definition of the derivative of
f'(x)=lim_(h rarr 0) ( f(x+h)-f(x) ) / h
Compare this derivative definition with the given limit:
f'(a) = lim_(h rarr 0) ( (3+h)^4-81 ) / h = lim_(h rarr 0) ( (3+h)^4-3^4 ) / h
And we see that