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3-62.

Hanah's (symmetrical difference) definition of the derivative;

f(x) = x2 − 3

Find f '(x), which is also the value of the limit.

Power Rule
if f(x) = xn
then f '(x) = nxn − 1

f(x) = x2 − 3
f '(x) = __________

Evaluate.