grouped_fraction_arguments.test

<<< tex
\sqrt{\frac{a}{b}}+\sqrt{\tfrac{a}{b}}+\sqrt{\dfrac{a}{b}}+\sqrt{\binom{a}{b}}+x^{\frac{a}{b}}+\underbrace{x}_{\frac{a}{b}}
>>> starmath
sqrt {a over b} + sqrt {size*0.7 {a over b}} + sqrt {a over b} + sqrt {left ( binom{a}{b} right )} + x^{a over b} + {x underbrace {a over b}}