Finding Intervals for Increasing and Decreasing Functions of a Cubic Equation

[dallas429quee]

hi, I'm not good at math at all. and I'm not sure how to finish this equation. any help would be appreciated. Thanks.



I need to find the intervals of where the function is increasing and decreasing.

f(x)= 2x³ - 5x² - 4x + 2

 

[jeffreydk]

Well first you need to differentiate it. What do you think you should do after that?

 

[pisay]

You need first to construct a table for that and find the roots of the equation and its differentials.