Wednesday

April 23, 2014

April 23, 2014

Posted by **Sandra** on Saturday, March 21, 2009 at 2:38pm.

f(x)=2x^3-3x^2-12x+5

i calculated the critical numbers as x=-1 and x=2 is this right?!?!

- Calculus -
**Reiny**, Saturday, March 21, 2009 at 2:44pmgreat so far.

now find f(2) and f(-1) for the y values of your critical points.

unless there is a domain given for your x's , there are no "end points" for your function.

- Calculus -
**drwls**, Saturday, March 21, 2009 at 2:46pmIf by "ritical numbers" you mean where the function has a local maximum or minimum, that would be where

f'(x) = 6x^2 -6x -12 = 0

x^2 -x -2 = 0

(x+1)(x-2) = 0

yes, -1 and 2 are correct.

f(x) has no end points or absolute maximum or minimum. It goes to + and - infinity when x does the same

**Related Questions**

help please! - f(x)=x+1/x Find all critical numbers. Find where the function is ...

Calculus - Find the critical numbers of the function g(t)=|5t-7| If you find g'(...

calculus - Please help!! *f(x)= x(x+6)^1/2 find two x intercepts. Then show that...

Math - 2x^3+3x^2-120x to find the critical numbers I took the derivative which ...

Calculus - What are the critical numbers of the function: f(x)=2x^3-3x^2-36x+14 ...

CALCULUS - 6. f(x)= 12x^5 + 30x^4 - 160x^3 +4 For this function there are four ...

calculus - f(x)=2x+8x^-1.For this function there are four important intervals...

calculus - Find all critical numbers: 2x*sqrt(3x^2+4)?

calculus - 2x*sqrt(3x^2+4) Find all critical numbers:

Calculus - Find the Critical Numbers? 1.) f(x) = 2x^3 + 3x^2 + 36x x=? 2.) g(t...