### Home > CALC > Chapter 4 > Lesson 4.5.1 > Problem 4-168

4-168.

For *y *=* x*^{3} + 3*x*^{2} − 24*x*, on what intervals of *x *is *y' *increasing? Homework Help ✎

If *y*' is increasing then *y*'' is positive.

4-168.

For *y *=* x*^{3} + 3*x*^{2} − 24*x*, on what intervals of *x *is *y' *increasing? Homework Help ✎

If *y*' is increasing then *y*'' is positive.