Find all values of x for which the curve f(x)=x^3-3x+4 is decreasing

The answer is -1<x<1
in Calculus Answers by

Your answer

Your name to display (optional):
Privacy: Your email address will only be used for sending these notifications.
Anti-spam verification:
To avoid this verification in future, please log in or register.

1 Answer

y=x^3 -3x+4

dy/dx=slope=3x^2-3

y dekreez if slope <0

so set slope=0...3x^2=3

x^2=1

so x=1 or x=-1

look at the numbers & yu find slope < 0 wen abs(x) <1
by

Related questions

1 answer
I need a list of all natural numbers
asked Sep 18, 2013 in Algebra 1 Answers by martezmackie Level 1 User (140 points) | 681 views
1 answer
I need a list of all natural numbers
asked Sep 18, 2013 in Algebra 1 Answers by martezmackie Level 1 User (140 points) | 664 views
2 answers
which is greater 18>3n,18(3)<n,18<3n,3<18n
asked Sep 21, 2012 in Algebra 2 Answers by anonymous | 724 views
1 answer
f(a+1) if f(x)=x^2+2x+5
asked Oct 15, 2012 in Algebra 1 Answers by anonymous | 822 views
1 answer
factor 3x^4+18x^3+27x^2 completely
asked Feb 20, 2014 in Algebra 2 Answers by anonymous | 1.2k views
1 answer
solve using elimination 3x-y=1 2x+y=14
asked Dec 5, 2012 in Trigonometry Answers by anonymous | 743 views
1 answer
solve using elimination 3x-y=1 2x+y=14
asked Dec 5, 2012 in Trigonometry Answers by anonymous | 1.0k views
Welcome to MathHomeworkAnswers.org, where students, teachers and math enthusiasts can ask and answer any math question. Get help and answers to any math problem including algebra, trigonometry, geometry, calculus, trigonometry, fractions, solving expression, simplifying expressions and more. Get answers to math questions. Help is always 100% free!

Most popular questions within the last 3000 days

  1. 50+50-25X0+2+2= (19)
  2. it takes 10 road workers 5 days to complete a road repair when working 2 hours a day.Working at the same pace,how many days will it take 2 people working 5 hours a day to finish it? (3)
  3. Solve 15 -1(12÷4+1)? (4)
  4. 8:4(5+2) (3)
  5. How can i represent 1/3; 3/3; 7/3; 10/3 and 15/3 on a number line? (1)

Most popular tags

87,515 questions
100,352 answers
2,420 comments
768,037 users