Cfrgtkky

I know that I can put usepackage{times} in the preamble in order to use the Times font instead of Computer Modern for my document. But this only affects the text; the math is still typeset using Computer Modern. How can I make Latex use Times also for the math?

Probably the most common solution at present using free fonts is mathptmx

usepackage{mathptmx}

This package supersedes times and mathptm.

The commercial mathtime is available in a 'lite' version in a free (cost) package, but you need to pay for the full version. See http://www.pctex.com/mtpro2.html

As noted in the answer by mafp, the newer newtx bundle is now available and addresses issues present in mathptmx.

In the mean time, two new option for Times have emerges. The newtx package provides both text and math versions for Times via

usepackage{newtxtext,newtxmath}

The TeX Gyre project supplies TeX Gyre Termes for text to be used with

usepackage{tgtermes}

and a math version TeX Gyre Termes Math that currently only comes in Open Type Format, and can be used with

usepackage{unicode-math}

setmathfont[math-style=ISO,bold-style=ISO,vargreek-shape=TeX]{TG Termes Math}

in LuaTeX or XeTeX, and with

starttypescript [math][times,termes][all]

    definefontsynonym[MathRoman][file:texgyretermes-math-1010.otf][features=mathmathsizesuffix]

stoptypescript

in ConTeXt.

If you don't mind using a Times-like font, a different engine, and the not yet officially released TeXLive-2010, then you can try XITS font with LuaLaTeX (my preference) or XeLaTeX:

documentclass{article}



usepackage{fontspec}

usepackage{unicode-math}



setmainfont{XITS} % you can use any other Times font if you wish

setmathfont{XITS Math}



begin{document}

Some text and (sqrt{x+y}=z) equation

end{document}

With current TeXLive 2012 and lualatex or xelatex

documentclass{article}    

usepackage{unicode-math}

setmainfont{TeX Gyre Termes}

setmathfont{TeX Gyre Termes Math}



begin{document}

Some text and (sqrt{x+y}=z) equation

end{document}

see package documentation of fontspec for optional arguments to the font setting.

I’ve been using the txfontsb package for Times, though generally I avoid Times. (After reading countless student papers in Times, it grates on me.)

Put

usepackage[bigsym]{mathptm}

in your preamble. This makes LaTeX use the Times and Symbol fonts for math, except for large symbols (summation, integration, etc.) which look funny in the Postscript Symbol font.