### Home > APCALC > Chapter 4 > Lesson 4.1.1 > Problem 4-10

4-10.

Use the Power Rule to write an equation for if

*by first expanding*

*Then, write the equation of the line tangent to* .

*at*

*.*

In order to find the equation of the tangent line at , you will need to find a point on the line and the slope at

*.*

To find a point, evaluate

To find the slope, evaluate

Put it all together in point-slope form: