### Home > APCALC > Chapter 4 > Lesson 4.4.3 > Problem 4-163

4-163.

Determine the linearization of at

*when*

*.*

Recall that you first investigated local linearization by using your calculator to 'zoom in' on a coordinate point until the curvy function appeared to be linear. You then found the equation of that 'line' using two points. You now have a better strategy.

Find the equation of the tangent line at .