A\ =\ \int\limits_{\fs11\ }^{\hspace{8}	\fs12}\left(	-\raisebox{-2}{\frac{2}{3}}x^{\fs12}\right)\ dx\ =\ \left[\ -\raisebox{-2}{\frac{2}{9}}x^{\fs13}\ \right]\ \limits_{\fs11}^{\fs12}