LaTex數學

$$ a_{1} \qquad x^{-2_{a}} \qquad a^{3}_{ij}$$ a1x−2aa3ij a 1 x − 2 a a i j 3 $$ \sqrt[3]{x^{2}-\sqrt{y_{1}}} $$ x2−y1−−√−−−−−−−−√3 x 2 − y 1 3 $$ \overline{m + n}\qquad \underline{m-n}$$ m+n¯¯¯¯¯¯¯

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