Calculus 8E
The limit is .
Let .
Definition of derivative at :
The derivative of thee function at a number a, is defined as,
.
From the definition of the derivative,
Derivative of the function at can be written as,
The given limit expression is equal to .
.
Differentiate on each side with respect to .
.
Substitute in above expression.
.
Hence,
.
.
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