2x^2-12x+19. find the interval where f is increasing and decreasing.

I need to find the intervals for f where it is increasing or decreasing. 2x^2-12x+19.
in Algebra 2 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

f(x)=2x²-12x+19=2(x²-6x+9-9)+19,

f(x)=2(x-3)²-18+19=2(x-3)²+1 has a vertex at (3,1).

On the left side of the vertex f(x) is decreasing and on the right side it’s increasing. That is, x<3 decreasing, x>3 increasing; or (-∞,3) decreasing, (3,∞) increasing.

by Top Rated User (1.1m points)

Related questions

1 answer
What is the interval heights of 95% of women
asked Nov 3, 2012 in Statistics Answers by anonymous | 692 views
1 answer
interval where the function is increasing
asked Aug 31, 2013 in Algebra 2 Answers by deannie | 651 views
1 answer
constant function is increasing or decreasing?
asked Mar 16, 2013 in Calculus Answers by anonymous | 871 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. complete the following. 825 use each digit once .make the two smallest 3 digit numbers and two largest 3-digit number (2)
  4. Solve 15 -1(12÷4+1)? (4)
  5. 8:4(5+2) (3)

Most popular tags

87,542 questions
99,804 answers
2,417 comments
523,336 users