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Thread: VCE Maths questions help

  1. #51
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    Re: maths questions help

    Quote Originally Posted by He-Mann View Post
    In my experience, it's either a lack of knowledge in a topic or it requires a whole new perspective on a concept.

    Assume that I've understood the question and have enough knowledge in the relevant topics. Then I usually employ a systematic approach described by George Polya in his book How to Solve It:


    1. First principle: Understand the problem

    2. Second principle: Devise a plan

    3. Third principle: Carry out the plan

    4. Fourth principle: Review/extend


    Works well in my experience when you don't have solutions. But I used to have a habit of checking solutions (given that I had solutions) before giving 100% on it; missed out on mental development here :P
    would you check worked solutions or non worked solutions?

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    Re: maths questions help

    Quote Originally Posted by boredsatan View Post
    would you check worked solutions or non worked solutions?
    Worked solutions.

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    Re: VCE Maths questions help

    Is it concerning if I need to use worked solutions to do maths homework? (I have tutor as well)

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    Re: VCE Maths questions help

    Bump!!

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    Re: VCE Maths questions help

    What does the domain R- mean?

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    Re: VCE Maths questions help

    Quote Originally Posted by boredsatan View Post
    What does the domain R- mean?
    Probably the negative reals. What was the context?

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    Re: VCE Maths questions help

    Quote Originally Posted by InteGrand View Post
    Probably the negative reals. What was the context?
    to sketch the graph of y = 2-x^2, x belongs to R-

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    Re: VCE Maths questions help

    Quote Originally Posted by boredsatan View Post
    to sketch the graph of y = 2-x^2, x belongs to R-
    Yeah, so it means sketch it for x < 0.

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    Re: VCE Maths questions help

    Quote Originally Posted by InteGrand View Post
    Yeah, so it means sketch it for x < 0.
    so basically sketch just the left hand side of the parabola?

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    Re: VCE Maths questions help

    Quote Originally Posted by InteGrand View Post
    Yeah, so it means sketch it for x < 0.
    So R- means <0?

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    Re: VCE Maths questions help

    Quote Originally Posted by boredsatan View Post
    So R- means <0?
    Bump!

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    Re: VCE Maths questions help

    What's the difference between open and closed brackets?

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    Re: VCE Maths questions help

    Quote Originally Posted by boredsatan View Post
    What's the difference between open and closed brackets?
    kawaiipotato likes this.

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    Re: VCE Maths questions help

    Quote Originally Posted by InteGrand View Post
    How about when stating the domain and range. How do you find out if it's open or closed?

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    Re: VCE Maths questions help

    Quote Originally Posted by boredsatan View Post
    How about when stating the domain and range. How do you find out if it's open or closed?
    bump!
    How do you know weather to state the domain with open or close brackets?

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    Re: VCE Maths questions help

    Quote Originally Posted by boredsatan View Post
    bump!
    How do you know weather to state the domain with open or close brackets?
    Depends on whether the domain includes the endpoint or not.

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    Re: VCE Maths questions help

    Quote Originally Posted by InteGrand View Post
    Depends on whether the domain includes the endpoint or not.
    Some questions ask you to state the domain and range of a graph. How do you know weather to state it as open or closed?

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    Re: VCE Maths questions help

    Quote Originally Posted by boredsatan View Post
    Some questions ask you to state the domain and range of a graph. How do you know weather to state it as open or closed?
    If they give you the graph, you can look at it to see if an endpoint is included or not.

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    Re: VCE Maths questions help

    Quote Originally Posted by InteGrand View Post
    If they give you the graph, you can look at it to see if an endpoint is included or not.
    So if it was a parabola that had arrows going in each direction would it be infinity and open bracket?

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    Re: VCE Maths questions help

    Quote Originally Posted by boredsatan View Post
    So if it was a parabola that had arrows going in each direction would it be infinity and open bracket?
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    Re: VCE Maths questions help

    Quote Originally Posted by InteGrand View Post
    Is this for the domain or the range?

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    Re: VCE Maths questions help

    Quote Originally Posted by boredsatan View Post
    Is this for the domain or the range?
    Domain

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    Re: VCE Maths questions help

    Quote Originally Posted by InteGrand View Post
    Domain
    so the range would be (lowest y value, infinity)?

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    Re: VCE Maths questions help

    What is the domain and range of y = 3/(x+2)^2 + 2?

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    Re: VCE Maths questions help

    Quote Originally Posted by boredsatan View Post
    What is the domain and range of y = 3/(x+2)^2 + 2?
    Anyone?

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