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    So i started looking through the solomon press papers and i noticed they ask you to sketch graphs. I have no idea how to do that. I mean some of the graphs are just random shapes (that's what it seems like to me anyway).

    Is there a kind of technique you use to draw them, or are there certain shapes you need to learn to recognise, like how  r=a(1+cos\theta) is a cardioid? Thanks.

    1. When is r max.

    In this case r is max when cos theta is Zero. So in the given limits check where the values of theta.

    2. Remeber the axis for which cos,sin graph does exist. (thats all in book) (if edexcel)

    3. Plot a few values and thats it.


    I always do a table of results and join up the dots
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Updated: June 7, 2008

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