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Math Help - Simple Calculus Problem

  1. #1
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    Simple Calculus Problem

    Pretty simple problem but I am not sure if the notation in my answer is correct -- So I am just going to post my answer and tell you what I am trying to say with it
    --
     f(x)=cosx/(1+cosx), x=(x)-[(x)in(Re) | 2(pi)n + (pi), (n)in(SetZ)


    Trying to say that x belongs to all real numbers excluding  pi rad and all of its similar angles.'

    Was unable to figure out how to say some things in you equation maker so clarified below

    in:Belongs to
    pi:3.14159.....
    Re: All Real Numbers
    SetZ:Integer Set
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  2. #2
    MPK
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    Hello,

    x \in \mathbb{R}- \left \{ x,x=k \pi, k \in \mathbb{Z} \right \}

    is that what you meant ?
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  3. #3
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    Quote Originally Posted by MPK View Post
    Hello,

    x \in \mathbb{R}- \left \{ x,x=k \pi, k \in \mathbb{Z} \right \}

    is that what you meant ?
    Slightly confused about the x,x

    ^^ -- Don't really know the notation that well

    But after looking at yours




    x \in \mathbb{R}- \left \{ x,x=2 \pi k - \pi, k \in \mathbb{Z} \right \}


    Because the equation does exist at 2\pi and 4\pi etc.

    Depending on what x,x means I think the above may be correct

    x=all real numbers minus angles \pi , 3 \pi , 5 \pi , etc
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  4. #4
    MPK
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    i meant x "\" x it means x such as x = k*...

    it's because of the latex thing..
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