When

, the function

takes on a value of
![8^(2/3)=\sqrt[3]{64}=4](https://img.qammunity.org/2018/formulas/mathematics/college/ujww04q6z28e5pw2tf0akjaqgv13bxgcnm.png)
. So you're looking to find the tangent line to

through the point

.
The tangent line through this point has the value of the derivative of

when

. The derivative is, by the power rule,

The point-slope form of the tangent line is
