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    Algebra/Trig Competition Ahmed VS Lev

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    Ahmed
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    Re: Algebra/Trig Competition Ahmed VS Lev

    Post by Ahmed on Thu May 13, 2010 9:49 pm

    Yeah, but I told you, it's because they have very limited space...so they moved on to looking at accusatives...it's stupid...yes...try influencing someone to drop it, then take him to your guidance and make the switch Razz ...or just speak with her I guess...

    And I don't think so...my accumulative is 94 (since freshman year till now). What's yours?
    ==========================
    Is this even, odd or neither:

    f(x)=x^3+cosx


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    Re: Algebra/Trig Competition Ahmed VS Lev

    Post by Justice on Fri May 14, 2010 5:46 pm

    f(x)=x^3+cosx

    f(-x)= (-x)^3 + cos -x
    f(-x) = -x^3 + cosx

    -f(x)= -x^3-cosx

    since -f(x)=/= f(-x)and f(x)=/= f(-x)
    It is neither
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    Re: Algebra/Trig Competition Ahmed VS Lev

    Post by Ahmed on Fri May 14, 2010 5:55 pm

    Very good. Your turn


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    Re: Algebra/Trig Competition Ahmed VS Lev

    Post by Justice on Fri May 14, 2010 6:08 pm

    solve the system

    x+y=4
    x^2+xy+y^2=13
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    Re: Algebra/Trig Competition Ahmed VS Lev

    Post by Justice on Fri May 14, 2010 6:52 pm

    Ahmed give up?
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    Re: Algebra/Trig Competition Ahmed VS Lev

    Post by Ahmed on Fri May 14, 2010 6:58 pm

    No...ill work on it after I eat Wink


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    Re: Algebra/Trig Competition Ahmed VS Lev

    Post by The Banker on Fri May 14, 2010 7:05 pm

    have fun Smile
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    Re: Algebra/Trig Competition Ahmed VS Lev

    Post by Ahmed on Fri May 14, 2010 8:40 pm

    x+y=4
    x^2+xy+y^2=13

    y=4-x

    x^2+x(4-x)+(4-x)^2=13
    x^2-4x+3=0
    (x-1)(x-3)=0
    x=1
    x=3

    (1,3) and (3,1)

    Good?


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    Re: Algebra/Trig Competition Ahmed VS Lev

    Post by Justice on Fri May 14, 2010 9:07 pm

    Yes good. your turn.
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    Re: Algebra/Trig Competition Ahmed VS Lev

    Post by Ahmed on Fri May 14, 2010 9:11 pm

    Ahmed:3
    Lev:3

    The angle of elevation of the top of a tower is 47 from a point D south of it.
    The angle of elevation of the top of the tower is 36 from a point E east of it.Find the height of the tower if the distance of DE is 70m.


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    Re: Algebra/Trig Competition Ahmed VS Lev

    Post by Justice on Sat May 15, 2010 6:20 pm

    Ahmed IV wrote:
    The angle of elevation of the top of a tower is 47 from a point D south of it.

    You said 47 from a point D do you mean 47 from point D
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    Re: Algebra/Trig Competition Ahmed VS Lev

    Post by Justice on Sat May 15, 2010 6:20 pm

    Basically can you reword this question.
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    Re: Algebra/Trig Competition Ahmed VS Lev

    Post by Ahmed on Sat May 15, 2010 6:22 pm

    Yes Lev


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    Re: Algebra/Trig Competition Ahmed VS Lev

    Post by Justice on Sat May 15, 2010 6:45 pm

    Ok so let me re-write your problem and tell me if its right.

    The angle of elevation of the top of a tower is 47 from point D south of it. (South meaning the floor right?)
    The angle of elevation of the top of the tower is 36 from point E east of it. (meaning to the right or left right?)
    Find the height of the tower if the distance of DE is 70m.
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    Re: Algebra/Trig Competition Ahmed VS Lev

    Post by Ahmed on Sat May 15, 2010 7:04 pm

    Yes

    Here's a picture for it:

    Code:
                ------P-----
                      o
                    *|  *
                    * |    *
                  *  |        *
                  *  |h          *
                *    |              *
                *    |                *
              *      |        x      36 *
              *      o  *  *  *  *  *  o E
            *47  *  Q              *
            *  * y        *  70
          * *    *
        D o


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    Re: Algebra/Trig Competition Ahmed VS Lev

    Post by Justice on Sat May 15, 2010 7:29 pm

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    Re: Algebra/Trig Competition Ahmed VS Lev

    Post by Ahmed on Sat May 15, 2010 7:38 pm

    Yes


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    Re: Algebra/Trig Competition Ahmed VS Lev

    Post by Justice on Sat May 15, 2010 7:54 pm

    in other words we got a triangle right? Not a trapezoid right?
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    Re: Algebra/Trig Competition Ahmed VS Lev

    Post by Justice on Sat May 15, 2010 7:55 pm

    in other words we got a triangle right? Not a trapezoid right?
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    Re: Algebra/Trig Competition Ahmed VS Lev

    Post by Ahmed on Sat May 15, 2010 7:57 pm

    Yes


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    Re: Algebra/Trig Competition Ahmed VS Lev

    Post by Justice on Sat May 15, 2010 8:17 pm

    is it 30.314
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    Re: Algebra/Trig Competition Ahmed VS Lev

    Post by Ahmed on Sat May 15, 2010 8:27 pm

    No Lev


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    Re: Algebra/Trig Competition Ahmed VS Lev

    Post by Justice on Sat May 15, 2010 8:34 pm

    What is it?
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    Re: Algebra/Trig Competition Ahmed VS Lev

    Post by Ahmed on Sat May 15, 2010 8:39 pm

    28.04503214


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    Re: Algebra/Trig Competition Ahmed VS Lev

    Post by Justice on Sat May 15, 2010 8:42 pm

    How?

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    Re: Algebra/Trig Competition Ahmed VS Lev

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