Sorted by: 179. Mainly it's a difference of size: dfrac means that the fraction is set in d isplaystyle. tfrac means that the fraction is set in t extstyle. with frac: the actual context implies the decision above. For example, if you have a complicated mathematical expression in the middle of some array environment (which, by default ...
Note: More information on inline and display versions of mathematics can be found in the Overleaf article Display style in math mode.; Our example fraction is typeset using the frac command (frac{1}{2}) which has the general form frac{numerator}{denominator}.. Text-style fractions. The following example demonstrates typesetting text-only fractions by …