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    I'm doing question 4 in the paper below. I've managed to get up to cii) and have done the integration but I didn't know which limits to use. I was going to do -pi to pi and then halve it but looking at the answer I'm supposed to use the values found in ci). I have no idea why. Could someone please explain, please.


    http://filestore.aqa.org.uk/subjects...W-QP-JUN07.PDF

    http://filestore.aqa.org.uk/subjects...W-MS-JUN07.PDF
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    (Original post by maggiehodgson)
    I'm doing question 4 in the paper below. I've managed to get up to cii) and have done the integration but I didn't know which limits to use. I was going to do -pi to pi and then halve it but looking at the answer I'm supposed to use the values found in ci). I have no idea why. Could someone please explain, please.


    http://filestore.aqa.org.uk/subjects...W-QP-JUN07.PDF

    http://filestore.aqa.org.uk/subjects...W-MS-JUN07.PDF
    As r approaches 0 what's theta doing?

    In practice you're just going to use the fact that the values of theta for which r=0 give you the tangents to the curve at the origin.
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    (Original post by BuryMathsTutor)
    As r approaches 0 what's theta doing?

    In practice you're just going to use the fact that the values of theta for which r=0 give you the tangents to the curve at the origin.
    Oh, I see. Thanks.
 
 
 
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