(50G) (49G+) Trapezoidal rule integration in RPL

[Thomas Klemm]

You'd have to use a list of vectors with this program for the HP-48:

Code:

\<< 0 SWAP 2
  \<< V\-> ROT V\-> ROT
      + ROT ROT - * +
  \>> DOSUBS
  2 /
\>>

Example:
{
[ 2 1 ]
[ 4 5 ]
[ 7 8 ]
}

Area = 25.5

Cheers
Thomas