jsMath
\[\int {1\over x}\,dx = \ln(x)+C\]
\[\sum_{i=1}^n i = {n(n+1)\over 2}.\]
\[\sum_{i=1}^n i = {n(n+1)\over 2}.\]
Business History and Operations Research & Management Science from Tokyo Bay Area,Nishi-Kasai
Business History and Operations Research & Management Science from Tokyo Bay Area,Nishi-Kasai