Results 1 to 10 of 10

Math Help - simplify..need help

  1. #1
    Senior Member
    Joined
    Sep 2009
    Posts
    300

    simplify..need help

    Hello,
    Please look at my picture

    I need someone to show me how to get the end bit of my sum finished, the correct answer is in green I cant seem to get it?
    Please help
    Attached Thumbnails Attached Thumbnails simplify..need help-probagain.jpg  
    Last edited by wolfhound; January 28th 2010 at 01:54 PM.
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Master Of Puppets
    pickslides's Avatar
    Joined
    Sep 2008
    From
    Melbourne
    Posts
    5,236
    Thanks
    29
     4T^2 = 8S^2

     \frac{T^2}{2} = S^2

     \sqrt{\frac{T^2}{2}} = S

     \frac{T}{\sqrt{2}} = S
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Senior Member
    Joined
    Sep 2009
    Posts
    300
    Can someone show me how to get the answer in green on my picture please????
    Follow Math Help Forum on Facebook and Google+

  4. #4
    Senior Member
    Joined
    Sep 2009
    Posts
    300
    Quote Originally Posted by pickslides View Post
     4T^2 = 8S^2

     \frac{T^2}{2} = S^2

     \sqrt{\frac{T^2}{2}} = S

     \frac{T}{\sqrt{2}} = S
    Sorry but this is not the answer in the green?
    Follow Math Help Forum on Facebook and Google+

  5. #5
    Senior Member
    Joined
    Sep 2009
    Posts
    300
    Is there any kind helpful people that can show me how to get the correct answer in green on my picture please????
    Follow Math Help Forum on Facebook and Google+

  6. #6
    Master Of Puppets
    pickslides's Avatar
    Joined
    Sep 2008
    From
    Melbourne
    Posts
    5,236
    Thanks
    29
    Quote Originally Posted by wolfhound View Post
    Is there any kind helpful people that can show me how to get the correct answer in green on my picture please????

    You need to rationalise the denominator in my post, that will give you the answer you require.

    Also please learn some LaTex to help us help you. Your paint attachments are hard to decipher.
    Follow Math Help Forum on Facebook and Google+

  7. #7
    Master Of Puppets
    pickslides's Avatar
    Joined
    Sep 2008
    From
    Melbourne
    Posts
    5,236
    Thanks
    29
    Quote Originally Posted by wolfhound View Post
    Its wrong? Why did you post it if you knew its wrong?
    Its no good.
    What are you rambling now?

    S = \frac{T}{\sqrt{2}}\times \frac{\sqrt{2}}{\sqrt{2}}

    Now finish it!
    Follow Math Help Forum on Facebook and Google+

  8. #8
    Grand Panjandrum
    Joined
    Nov 2005
    From
    someplace
    Posts
    14,972
    Thanks
    4
    Quote Originally Posted by wolfhound View Post
    the answer is in a textbook, so thats wrong and you are right?
    If you dont like the style of my posts dont bother reading them , your the first person to complain about them. I'm happy without latex
    \frac{1}{\sqrt{2}}=\frac{\sqrt{2}}{2}

    CB
    Follow Math Help Forum on Facebook and Google+

  9. #9
    A riddle wrapped in an enigma
    masters's Avatar
    Joined
    Jan 2008
    From
    Big Stone Gap, Virginia
    Posts
    2,551
    Thanks
    12
    Awards
    1
    Quote Originally Posted by wolfhound View Post
    Its wrong? Why did you post it if you knew its wrong?
    Its no good.
    Hi wolfhound,

    Now, now let's be nice.

    Here's the flow from where you started:

    4t^2-8s^2=0

    -8s^2=-4t^2

    s^2=\frac{1}{2}t^2

    s=\sqrt{\frac{1}{2}t^2}

    s=\frac{\sqrt{t^2}}{\sqrt{2}}

    s=\frac{t}{\sqrt{2}}

    This is what Pickslides gave you. Now, you must rationalize the denominator.

    s=\frac{t}{\sqrt{2}}\cdot \frac{\sqrt{2}}{\sqrt{2}}

    s=\frac{t\sqrt{2}}{2}

    {\color{green}s=\frac{1}{2}t\sqrt{2}}
    Follow Math Help Forum on Facebook and Google+

  10. #10
    Senior Member
    Joined
    Sep 2009
    Posts
    300
    Quote Originally Posted by masters View Post
    Hi wolfhound,

    Now, now let's be nice.

    Here's the flow from where you started:

    4t^2-8s^2=0

    -8s^2=-4t^2

    s^2=\frac{1}{2}t^2

    s=\sqrt{\frac{1}{2}t^2}

    s=\frac{\sqrt{t^2}}{\sqrt{2}}

    s=\frac{t}{\sqrt{2}}

    This is what Pickslides gave you. Now, you must rationalize the denominator.

    s=\frac{t}{\sqrt{2}}\cdot \frac{\sqrt{2}}{\sqrt{2}}

    s=\frac{t\sqrt{2}}{2}

    {\color{green}s=\frac{1}{2}t\sqrt{2}}
    Thank you very much
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. simplify #2
    Posted in the Pre-Calculus Forum
    Replies: 1
    Last Post: September 21st 2009, 03:37 PM
  2. Please simplify
    Posted in the Trigonometry Forum
    Replies: 4
    Last Post: April 27th 2009, 05:32 AM
  3. Can you simplify this further?
    Posted in the Algebra Forum
    Replies: 4
    Last Post: April 23rd 2009, 07:45 AM
  4. Simplify
    Posted in the Algebra Forum
    Replies: 2
    Last Post: April 12th 2009, 06:06 AM

Search Tags


/mathhelpforum @mathhelpforum