### Home > APCALC > Chapter 3 > Lesson 3.1.2 > Problem 3-34

3-34.

In many textbooks the derivative (or IROC) is described in terms of and

*) instead of*

*and*

*.*

Explain why

andare equivalent. .'typically appears in the expression:. How are these equivalent? Use the diagram at right and the definition of IROC to write the slope of the tangent line in terms of

and. 'Definition of the Derivative' is the same thing as 'Instantaneous Rate of Change': IROC