The definite integral is ,
.
Consider .
In this case .
Width .
Substitute and
.
.
.
Find the function values.
\.
.
.
.
.
Substitute and
values in
.
.
.
.
.
.
Trapezoidal rule :
\.
Substitute ,
,
,
, and
.
.
Simpsons rule :
\.
Substitute ,
,
,
, and
.
.
The integral is .
.
Trapezoidal Simpsons Exact
\
.