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Math Help - When a constant is on top of a function

  1. #1
    Junior Member
    Joined
    Mar 2009
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    42

    When a constant is on top of a function

    When a constant is the numerator

    For example,
     <br /> <br />
z = \frac{x}{y+1}<br />

    Can I rewrite it as z = x(\frac{1}{y+1})

    So that \frac {\partial z}{\partial y}= 0 + x[- \frac {1}{(y+1)^2}]
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  2. #2
    Member
    Joined
    Jan 2009
    Posts
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    Yes. But you don't need to:
    <br />
\frac {\partial z}{\partial y}= \frac {0(y+1)-1(x)}{(y+1)^2}<br />

    gives the same answer.

    -O
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