Results 1 to 4 of 4

Math Help - [SOLVED] Quick MC Questions... double checking answers.

  1. #1
    Newbie
    Joined
    Jan 2008
    Posts
    11

    Exclamation [SOLVED] Quick MC Questions... double checking answers.

    I have an online quiz, that I am currently taking and should submit pretty soon.
    The answer in bold is the one I chose. If I am wrong, please explain why
    Thanks for any input, I appreciate it.
    ---

    1) Let R be the region between the curves y=x^2
    and y=2x-(x^2).

    To find the area of R, we need to

    A) integrate [(x^2)-(2x-x^2)] from 0 to 1
    B) integrate [(2x-x^2)-(x^2)] from 0 to 1
    C) integrate [(x^2)-(2x-x^2)] from 0 to 2
    D) integrate [(2x-x^2)-(x^2)] from 0 to 2


    2)Let R be the region bounded by the curves y=(x^2)+3 and y=x, for x in [-1,1].


    The area of R is equal to

    A) 2
    B) 17/3
    C) 20/3


    3) Let R be the region bounded by the curves x=(y^2) and y=x+5, for y in [-1,2].

    Sketch the region, then answer the following question.

    The most convenient way to find the area of R is to slice the region...

    A) horizontally
    B) vertically
    Follow Math Help Forum on Facebook and Google+

  2. #2
    is up to his old tricks again! Jhevon's Avatar
    Joined
    Feb 2007
    From
    New York, USA
    Posts
    11,663
    Thanks
    3
    Quote Originally Posted by daneeyah View Post
    I have an online quiz, that I am currently taking and should submit pretty soon.
    The answer in bold is the one I chose. If I am wrong, please explain why
    Thanks for any input, I appreciate it.
    ---

    1) Let R be the region between the curves y=x^2
    and y=2x-(x^2).

    To find the area of R, we need to

    A) integrate [(x^2)-(2x-x^2)] from 0 to 1
    B) integrate [(2x-x^2)-(x^2)] from 0 to 1
    C) integrate [(x^2)-(2x-x^2)] from 0 to 2
    D) integrate [(2x-x^2)-(x^2)] from 0 to 2


    2)Let R be the region bounded by the curves y=(x^2)+3 and y=x, for x in [-1,1].


    The area of R is equal to

    A) 2
    B) 17/3
    C) 20/3


    3) Let R be the region bounded by the curves x=(y^2) and y=x+5, for y in [-1,2].

    Sketch the region, then answer the following question.

    The most convenient way to find the area of R is to slice the region...

    A) horizontally
    B) vertically
    you already asked these. double posting is against the rules, please don't do it
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Newbie
    Joined
    Jan 2008
    Posts
    11
    Sorry I didn't know...how do I delete my thread.
    Follow Math Help Forum on Facebook and Google+

  4. #4
    is up to his old tricks again! Jhevon's Avatar
    Joined
    Feb 2007
    From
    New York, USA
    Posts
    11,663
    Thanks
    3
    Quote Originally Posted by daneeyah View Post
    Sorry I didn't know...how do I delete my thread.
    leave it. one of the mods will delete it
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Transformation Matrices - Double Checking my Answers
    Posted in the Pre-Calculus Forum
    Replies: 0
    Last Post: September 30th 2009, 10:24 AM
  2. Replies: 2
    Last Post: May 7th 2009, 03:59 PM
  3. Checking my answers
    Posted in the Algebra Forum
    Replies: 3
    Last Post: January 12th 2009, 11:59 PM
  4. 2 quick questions on double integrals
    Posted in the Calculus Forum
    Replies: 1
    Last Post: January 10th 2009, 08:55 AM
  5. Replies: 0
    Last Post: April 9th 2006, 06:37 AM

Search Tags


/mathhelpforum @mathhelpforum