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    In question 2 of the cylindrical polars questions in the thread created by TeeEm, why does the squared in the (x+y+z)^2 disappear in the solutions at the start?



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    (Original post by madmadmax321)
    In question 2 of the cylindrical polars questions in the thread created by TeeEm, why does the squared in the (x+y+z)^2 disappear in the solutions at the start?



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    You'll need to link the question or put up a picture of it.
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    (Original post by Zacken)
    You'll need to link the question or put up a picture of it.
    its cylindrical polars 2 http://www.thestudentroom.co.uk/show....php?t=3349661
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    (Original post by madmadmax321)
    its cylindrical polars 2 http://www.thestudentroom.co.uk/show....php?t=3349661
    He wrote down one problem and solved another. It's a mistake.
 
 
 
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