[Tex/LaTex] Derivatives: enter “evaluated at” vertical bar with multiple values as subscripts

delimitersmath-modesubscriptsvertical alignment

Sorry for the long title, but how do I enter evaluated at (for a derivative), with multiple valuation criteria at the bottom of the the big | line?

Thanks!

Best Answer

You mean \frac{d}{dx}\Bigr|_{\substack{x=1\\y=2}} from the package \usepackage{amsmath} ?