Posted by Peter on Saturday, August 11, 2012 at 3:27pm.
How do I find the minimum or maximum of this y = 2x³ + 3x²  12x? It makes 2 curves.

PreCalculus  Steve, Saturday, August 11, 2012 at 5:00pm
y = 2x^3 + 3x^2  12x
y' = 6x^2 + 6x  12 = 6(x+2)(x1)
y'=0 when x=2 or 1
Knowing what you do about cubic curves, you can see that
the local max occurs at x = 2, and
the local min is at x = 1
y(2) = 20
y(1) = 7
Answer This Question
Related Questions
 algebra  Can someone please explain What polynomial has a graph that passes ...
 Algebra2  Complete parts a – c for each quadratic function. a. Find the y...
 College Alg  Graph the polynomial in the given viewing rectangle. Find the ...
 Algebra Maximum and minimum.  I don't understand how to find the maximum and ...
 PreCalculus  I'm having problems solving this and showing the steps: Find the ...
 calculus  there are no examples of this type of problem in my book so if you ...
 calculus  1. Which of the following expressions is the definition of the ...
 Math  Can someone help me with these questions? 1.What are the maximum and ...
 Applied Calculus  Find the absolute maximum and absolute minimum values, if any...
 math  this question concerns the function f(x)=2x3+3x2+12x+10 (a)find the ...
More Related Questions