April 19, 2014

Homework Help: Calculus

Posted by dee on Friday, March 9, 2007 at 10:51am.

relative extrema


so far I know how to find the derivative which is

4x^3-2x now I am stuck...
Please help


and what are the roots? I will give you a hint: one is x=0 The other two are in the second parenthesis.

Is it x-1 and x=-1

I did a typo

Is it

x-1, x+1

If you are in calc, you might want to consider some alternatives. This is pretty low level algebra. You are going to suffer with this lack of algebra understanding.

The roots of
come from 2x=0 and 2x^2-1=0
or x=0 or x= +- sqrt (1/2)
Three roots.

Good luck.

The way that I did the problem was different than the way you did it. I had 4x(x^2-1) = 0

That is how I came up with the roots of x=0, x=1, x=-1

Was this way correct also?

No. You cannot factor 4x^3-2x the way you did. The only common factor is 2x.

4x^3-2x = 2x(2x^2-1)

The original problem was this


Derivative = 4x^3-4x=0 when you factor you get 4x(x^2-1) = 0
Then you are left with x=0, x=1, x=-1.

I think you are given me the wrong answer.

Answer this Question

First Name:
School Subject:

Related Questions

TRIG! - Posted by hayden on Monday, February 23, 2009 at 4:05pm. sin^6 x + cos^6...
math-calculus - i think i do something wrong again(2x+1)/(x-3)-(4x-1)/(2x-3) = 0...
math - i am having a minor difficulty i've been stuck for over an hour and don't...
alegebra - 1. What is the factored form of 4x 2 + 12x + 5? (1 point) (2x + 4)(2x...
derivative - 29) Find the derivative of the function. F(X)=2x^2(3-4x)^2 This is...
bobpursley,math - about this problem , I figured it out and i did get the answer...
Calc - intergral of (x^3 -4x + 3)/(2x) dx would this be ln abs(x^3-4x+3) + C? I ...
Calculus - We are doing problems with the product and quotient rules, but I'm ...
Algebra2 - I can't get the right answer to this problem...what am I doing wrong...
Math - My question says: Find the exact alue of x for which (4^x)*(5^[4x+3])=(10...