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Math Help - solving a calc. equation...

  1. #1
    Junior Member
    Joined
    Jan 2009
    Posts
    48

    Question solving a calc. equation...

    I am completely stuck on this one...
    Let z(x,y) = 3xy^2 - 2y + 5x^2y^2
    the last term should read "5 x sq y sq"
    Which of the following is equal to a^z/ax^2?

    my options are
    10y^2
    (3y^2 + 10xy^2)^2
    6y + 20xy
    3y^2 + 10xy^2
    6x + 10x^2
    one of these is right, but i'm not sure which, or how...any help would be great!
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  2. #2
    Member
    Joined
    May 2006
    Posts
    244
    Quote Originally Posted by bemidjibasser View Post
    I am completely stuck on this one...
    Let z(x,y) = 3xy^2 - 2y + 5x^2y^2
    the last term should read "5 x sq y sq"
    Which of the following is equal to a^z/ax^2?

    my options are
    10y^2
    (3y^2 + 10xy^2)^2
    6y + 20xy
    3y^2 + 10xy^2
    6x + 10x^2
    one of these is right, but i'm not sure which, or how...any help would be great!
    Check your question, as:

    \frac{a^z}{a x^2}

    cannot be equal to any of the options.

    .
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