(Solved): Find an expression for the area between the curves defined by \( y=4 x \) and ...

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Find an expression for the area between the curves defined by \( y=4 x \) and \( y=12 x^{2} \). \[ \begin{array}{l} \int_{1 / 3}^{0}\left(4 x-12 x^{2}\right) d x \\ \int_{0}^{1 / 3}\left(4 x-12 x^{2}\right) d x \\ \int_{0}^{3}\left(4 x-12 x^{2}\right) d x \\ \int_{0}^{2}\left(12 x^{2}-4 x\right) d x \end{array} \] None of these