Differentiate each function by applying the basic rules of differentiation
`((2u)/(1-2u))`

Explanation

To differentiate the function \( f(u) = \frac{2u}{1 - 2u} \), we will use the quotient rule of differentiation. The quotient rule states that if you have a function in the form \( \frac{a}{b} \), where both \( a \) and \( b \) are functions of \( u \), then the derivative \( f'(u) \) is given by:

\[ f'(u) = \frac{a' \cdot b - a \cdot b'}{b^2} \]

where \( a' \) is the derivative of \( a \) and \( b' \) is the derivative of \( b \).

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