### Home > APCALC > Chapter 3 > Lesson 3.2.3 > Problem 3-77

3-77.

Lazy Lulu is looking at this limit: * definition of the derivative* at a point. She thinks she can use the Power Rule instead.

What variation of the definition of the derivative is this?

This is Ana's Definition of the Derivative:

What is the equation of

? What is the value of?Observe that

when.

Notice that, which confirms that equation ofis correct.Use the Power Rule to write an equation for

and then use it to calculate._________________________________

You just avoided a lot of Algebra!