Posted by Rachal on Sunday, May 15, 2011 at 12:10am.
The polynomial function f(x) is defined by f(x)=4x^4+9x^3+2x^27x2.
Use a graphing calculator to find all the points where there is a local minimum.
Round to the nearest hundredth.

Trig  drwls, Sunday, May 15, 2011 at 12:47am
This subject is not trig. You will have to use your own graphic calculator.