hello everyone....im really hoping someone can help me, im in somewhat of a fix.
the problem is: x3+2x2-x-2
i have to:
find where f(x) is increasing/decreasing
where it is concave up/concave down
and then finally sketch the curve of the graph
my first step is to take the derivative, which is : f'(x)=3x2+4x-1
im a bit lost as to what i should do after this. i know i have to find the critical points where x=0 and is undefined.
when the whole equation =0, x= -4/3? the derivative cant be further factored, right?
i cant get past this point, so any guidance is highly appreciated. thanks.