Expression 6: left bracket, polygon left parenthesis, left parenthesis, "i" , 0 , right parenthesis , left parenthesis, "i" plus 1 , 0 , right parenthesis , left parenthesis, "i" plus 1 , "g" left parenthesis, "i" , right parenthesis , right parenthesis , left parenthesis, "i" , "g" left parenthesis, "i" , right parenthesis , right parenthesis , right parenthesis for "i" equals left bracket, 0 , ... , "N" , right bracket , right bracketpolygoni,0,i+1,0,i+1,gi,i,gifori=0,...,N
49 element list
6
Expression 7: "a" equals 3a=3
negative 10−10
1010
7
By contrast the integral given by:
8
Expression 9: Start integral from 0 to "N" , end integral, StartFraction, "x" Superscript, "n" , Baseline Over "n" ! , EndFraction "d" "n"∫N0xnn!dn
9
would be the integral of the function g(x). That will roughly but not exactly equal the left Riemann sum.