TeXForm

Exports an expression to TeX format

TeXForm[expr_]

Examples

Series[Sin[x], {x,0,5}] // Normal // TeXForm

output

"\\frac{x^5}{120}-\\frac{x^3}{6}+x"

One can directly render using LaTeX built in to Markdown cells via CellView

CellView[StringJoin[
  "$$\n",
  TeXForm[Series[Sin[x], {x,0,7}] // Normal],
  "\n$$"
], "Display"->"markdown"]

Using ToExpression one can parse TeX to Wolfram Language

ToExpression["\\frac{x^5}{120}-\\frac{x^3}{6}+x", TeXForm]