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    Q1. When sketching reciprocal graphs, is plugging in x values to find y compulsory because I've seen a few tutorials where people just draw it without actually finding the y values.

    Q2. How do you find the Asymptotes of a reciprocal graph?
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    (Original post by FamilyFirst)
    Q1. When sketching reciprocal graphs, is plugging in x values to find y compulsory because I've seen a few tutorials where people just draw it without actually finding the y values.

    Q2. How do you find the Asymptotes of a reciprocal graph?
    A1. Not unless the question states you must do so.

    A2. say we have F(x)=f(x)/g(x) where f/g cannot be simplified, then the vertical asymptotes will appear when g(x)=0 , the horizontal asypmtotes will appear when we divide through by the highest power of x in F(x) then take the limit as x->infinity
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    Ohh, makes a bit of sense. Thank you, I'll attempt some questions now.
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    1: no sketching is just drawn it as basic, normally you should show important points but a question should state it.

    2: an asymptote is where a graph goes off to infinity or the function cannot work properly. A reciprocal is 1/f(X) e.g. 1/sinx. When f(X) is 0 the value would be infinity or n/a so these points are where the asymptotes are e.g. Sinx = 0 at 0, 180, 360 degrees etc.
 
 
 
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