Posted by britney on Thursday, November 15, 2012 at 1:23pm.
let f(x)=x^3+3x^22x+4
What are the critical values?
Where are the relative extrema, if they exist?

math  Steve, Thursday, November 15, 2012 at 1:45pm
critical values are values in the domain where f'(x) = 0
since f'(x) = 3x^2 + 6x  1, the critical values would be (3±2√3)/2
the extrema occur at the critical values.

math  Steve, Thursday, November 15, 2012 at 1:51pm
oops. f' = 3x^2 + 6x  2.
extrema at x=(3±√15)/3
Answer This Question
Related Questions
 math  let f(x)=x^3+3x^22x+4 What are the critical values? Where are the ...
 calculus  find the relative extrema and points of inflection, if possible, of y...
 Calculus  Find the xvalues of all points where the function below has any ...
 math  Find the relative extrema, if any, of the function. Use the second ...
 math  f(x)=x^44x^3+10 Where are the relative extrema, if they exist?
 Calculus  Find the relative extrema, if any, of the function. Use the second ...
 Math  Find xvalue of all points where function has relative extrema and find ...
 calc  Average daily temp,y, is y=4523cos(2pi(x32)/365), where x is time in ...
 math  Let f(x)= x^44x^3+10 Where are the relative extrema, if they exist? Show...
 math  Let f(x)= x^44x^3+10 Where are the relative extrema, if they exist? Show...
More Related Questions