[WP 34s] Trapezoidal approximation of area under curve

[Thomas Klemm]

(06-16-2015 10:47 AM)Marcio Wrote:  Does anyone know how to do \(RCL+ Z\) on the 35s?

You can use the following program:

Code:

T001 LBL T
T002 CLΣ
T003 STOP
T004 REGY+REGT
T005 REGY-REGT
T006 Σ+
T007 R↓
T008 R↓
T009 GTO T003

Usage:
\(y_1\) ENTER \(x_1\) XEQ T
\(y_2\) ENTER \(x_2\) R/S
(...)
\(y_n\) ENTER \(x_n\) R/S
Σxy
2 ÷


Cheers
Thomas