The \big| or \Big| symbols work quite well \documentclass{article} \usepackage{amsmath} \begin{document} \[ \int_a^b x^2\;\mathrm{d}x= \tfrac{1}{3} x^3 ... ... <看更多>

Something like this will do the trick. \usepackage{amsmath} \def\mathclap#1{\text{\hbox to 0pt{\hss$\mathsurround=0pt#1$\hss}}} ... ... <看更多>

latex (Integral) for definite integrals always uses \limits unless mode='inline'. This causes the limits to be put above and below the ... ... <看更多>