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    Trig Competition-Ahmed vs. Marwa

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    Ahmed
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    Trig Competition-Ahmed vs. Marwa

    Post by Ahmed on Wed May 12, 2010 8:20 pm

    I'll allow you to start.


    Last edited by Ahmed IV on Wed May 12, 2010 10:51 pm; edited 1 time in total


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    Re: Trig Competition-Ahmed vs. Marwa

    Post by The Banker on Wed May 12, 2010 8:42 pm

    Spoiler:
    The diagram shows part of the equation y=f(x), where f(x)=1+2sin(px+q), p and q being positive constants and q≤90. The curve cuts the y-axis at the point A and the x-axis the points C and D. The point B is a maximum point on the curve.

    Given that the coordinates of the point A and C are (0,2) and (45,0) respectively

    >> calculate the value of q
    >> show that p=4
    >> fine the coordinates of B and D


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    Re: Trig Competition-Ahmed vs. Marwa

    Post by Ahmed on Wed May 12, 2010 8:50 pm

    1 Question at a time:

    f(x)=1+2sin(px+q)

    0=1+2sin(p(0)+q)
    0=1+2sin(q)
    sin(q)=-1/2
    q=sin^-1(-1/2)

    q=-30 degrees


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    Re: Trig Competition-Ahmed vs. Marwa

    Post by The Banker on Wed May 12, 2010 8:51 pm

    close...
    but its q=30
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    Re: Trig Competition-Ahmed vs. Marwa

    Post by Ahmed on Wed May 12, 2010 8:52 pm

    Well you can't blame me to be honest. You never specified the range...for example: 0<x<360

    You just said "find"...so I won Wink

    My turn?


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    Re: Trig Competition-Ahmed vs. Marwa

    Post by The Banker on Wed May 12, 2010 8:55 pm

    lol, kay mr Razz
    ur go
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    Re: Trig Competition-Ahmed vs. Marwa

    Post by Ahmed on Wed May 12, 2010 8:58 pm

    Ahmed:1
    Marwa:0

    Let's start out easy:

    Is x-1 a factor of x^567-3x^400+x^9+2?


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    Re: Trig Competition-Ahmed vs. Marwa

    Post by The Banker on Wed May 12, 2010 9:00 pm

    nope
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    Re: Trig Competition-Ahmed vs. Marwa

    Post by Ahmed on Wed May 12, 2010 9:05 pm

    Show your work. I showed my work.


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    Re: Trig Competition-Ahmed vs. Marwa

    Post by The Banker on Wed May 12, 2010 9:07 pm

    the factor theorem,
    (x-1) so we'll use x=1
    1-3+1+2 =/= 0
    so (x-1) is not a factor of the big long thing u wrote up there...


    Last edited by Marwa on Thu May 13, 2010 2:55 pm; edited 1 time in total
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    Re: Trig Competition-Ahmed vs. Marwa

    Post by Ahmed on Wed May 12, 2010 9:14 pm

    Good.

    Ahmed: 1
    Marwa: 1

    Your turn.


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    Re: Trig Competition-Ahmed vs. Marwa

    Post by The Banker on Wed May 12, 2010 9:15 pm

    i'll give ya the next q tomoz... Razz
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    Re: Trig Competition-Ahmed vs. Marwa

    Post by Ahmed on Wed May 12, 2010 10:51 pm

    I'm waiting.


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    Re: Trig Competition-Ahmed vs. Marwa

    Post by Fangy on Wed May 12, 2010 11:02 pm

    Can I give a totally unrelated question to all of you, with some trig in it?
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    Re: Trig Competition-Ahmed vs. Marwa

    Post by Ahmed on Wed May 12, 2010 11:04 pm

    Make another topic about it. This topic is just for a competition between Marwa and I to see who's smarter in Trig Razz


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    Re: Trig Competition-Ahmed vs. Marwa

    Post by Fangy on Wed May 12, 2010 11:17 pm

    Mmkay. Maybe I'll make it my next question in my quiz...
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    Re: Trig Competition-Ahmed vs. Marwa

    Post by Ahmed on Wed May 12, 2010 11:23 pm

    Oh shouldn't I have won by now?


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    Re: Trig Competition-Ahmed vs. Marwa

    Post by Fangy on Wed May 12, 2010 11:24 pm

    I extended it Razz It ends this Saturday. Hoping for more answers.
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    Re: Trig Competition-Ahmed vs. Marwa

    Post by Ahmed on Wed May 12, 2010 11:26 pm

    Did anyone else answer? Just wondering.


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    Re: Trig Competition-Ahmed vs. Marwa

    Post by Doc on Wed May 12, 2010 11:49 pm

    i foresee marwa dominating this competition .. afterall, all she is good at is math lol
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    Re: Trig Competition-Ahmed vs. Marwa

    Post by Ahmed on Wed May 12, 2010 11:50 pm

    I'm better (no arrogance meant lol). And I'll prove that. That's why I made this competition Wink


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    Re: Trig Competition-Ahmed vs. Marwa

    Post by Doc on Wed May 12, 2010 11:52 pm

    u hardly know anything Rolling Eyes

    and if you're so good then challenge me to anything ...
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    Re: Trig Competition-Ahmed vs. Marwa

    Post by Ahmed on Wed May 12, 2010 11:53 pm

    I don't want to glorify myself to the point where I beat a 2nd year college student. But if you insist, then prepare for a humiliating defeat.


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    Re: Trig Competition-Ahmed vs. Marwa

    Post by Doc on Thu May 13, 2010 12:02 am

    name the topic .. mentally destroying and completely embarrassing a youngster will be most entertaining .. prepare for the shame and despair ... only lamentation is in your future lol
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    Re: Trig Competition-Ahmed vs. Marwa

    Post by Ahmed on Thu May 13, 2010 12:12 am

    Well I wouldn't exactly be losing anything or being embarrassed since I am a "Junior" and you are a 2nd year college student Razz

    However, I could only gain. And that is being showing that I am smarter than you. So it's only your loss and my gain Wink


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