f ( x 0 ) + f ( x 1 ) 2 ∗ ( b − a n ) {\displaystyle {f(x_{0})+f(x_{1}) \over 2}*\left({b-a \over n}\right)}
∑ n = 1 28 n ! ( k ) ! ∗ ( n − k ) ! {\displaystyle \sum _{n=1}^{28}{n! \over {(k)!*(n-k)!}}}
f ( 1 ) + f ( 2 ) + f ( 3 ) + . . . + f ( 28 ) {\displaystyle f(1)+f(2)+f(3)+...+f(28)}
or
∑ n = 1 28 f ( n ) {\displaystyle \sum _{n=1}^{28}{f(n)}}
--
∫ 1 28 f ( x ) {\displaystyle \int _{1}^{28}f(x)} , where
f ( k ) = n ! ( ⌊ k ⌋ ) ! ⋅ ( n − ⌊ k ⌋ ) ! , n = 28 {\displaystyle f(k)={n! \over {(\lfloor {k}\rfloor )!\cdot (n-\lfloor {k}\rfloor )!}},n=28}
h e l l o {\displaystyle hello}
, where
