Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Mean value theorem

  1. Mar 1, 2007 #1
    Verify that the function satisfies the hypotheses of the Mean Value Theorem on the given interval. Then find all numbers that satisfy the conclusion of the Mean Value Theorem.


    f(x)=3x^2+6x+7 on [-2,3]

    so f(3)-f(-2)=f'(x)(3+2)

    i get 52-7=(6x+6)(5)

    then 45=30x+30

    then 5=30x

    and x=1/6

    where am i going wrong?
     
  2. jcsd
  3. Mar 1, 2007 #2

    Dick

    User Avatar
    Science Advisor
    Homework Helper

    You seem to have computed 45-30=5?!
     
  4. Mar 1, 2007 #3
    oohhh my! thank you so much! i didnt see that !
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook