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    can someone explain how the answer here concludes with "hence 2x + y = 5"

    I don't see it, I'm fine with every step until that

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    (Original post by marinara pizza)
    can someone explain how the answer here concludes with "hence 2x + y = 5"

    I don't see it, I'm fine with every step until that
    Can you show us the full question?
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    (Original post by Zacken)
    Can you show us the full question?
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    (Original post by marinara pizza)
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    The wording is misleading, it's not "hence", it's just:

    You have x and y in terms of u and v and the question gives you 2x+y = 5 so replace x and y with their functions of u and v to get an equation which you can then simplify to show is a circle.

    i.e: you're given 2x+y=5 and not derived it. You want to show that 2x+y is transformed to a circle.
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    (Original post by Zacken)
    The wording is misleading, it's not "hence", it's just:

    You have x and y in terms of u and v and the question gives you 2x+y = 5 so replace x and y with their functions of u and v to get an equation which you can then simplify to show is a circle.

    i.e: you're given 2x+y=5 and not derived it. You want to show that 2x+y is transformed to a circle.
    oh right i see, thanks !
 
 
 
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