For what interval(s) is the following function increasing and decreasing?

y= x^3 + x^2 - 5x- 6

and what window did you use?

- Nov 28th 2008, 09:06 AMgnarlycarly227For what interval(s) is the following function increasing and decreasing?
For what interval(s) is the following function increasing and decreasing?

y= x^3 + x^2 - 5x- 6

and what window did you use? - Nov 28th 2008, 09:16 AMrunning-gag
y'(x)=3x²+2x-5=(3x+5)(x-1)

You just have to find the sign of y'(x)