\starttext

    \startimath
        4\frac {3}{2} \quad
        4\tfrac{3}{2} \quad
        \frac  {4\sqrt{3}} {2} \quad
        \tfrac {4\sqrt{3}} {2} \quad
        \text  {xx} \quad
        \sqrt  {\text{xx}}
    \stopimath

    \startdmath
        4\frac {3}{2} \quad
        4\tfrac{3}{2} \quad
        4\frac {\sqrt{3}} {2} \quad
        4\tfrac{\sqrt{3}} {2} \quad
        4\text  {xx} \quad
        4\sqrt  {\text{xx}}
    \stopdmath

    \startimath
        \frac  {\sqrt{3}} {2} \quad
        \tfrac {\sqrt{3}} {2} \quad
    \stopimath

    \startdmath
        \frac  {\sqrt{3}} {2} \quad
        \tfrac {\sqrt{3}} {2} \quad
    \stopdmath

\stoptext
