You will find your COMMAND keys under "catalog" in your calculator! The right arrow $$ indicates "store". After entering the last line of code for the program, press $2^{nd}$ Quit to leave the program editor and return to the home screen. Click on the following link to watch a how$-$to video to enter the program into your calculator!

RIEMANN VIDEO

PROGRAM: RIEMANN

: Float

: ClrHome

: Prompt A$,$ B$,$ N

:$\frac{B-A}{N}H$

:$0S$

: For$($I$,1,N-1$

:$A+I**Hx$

:$S+Y_1(x)S$

: End

:$(Y_1((A))+S)**HL$

:$(S+Y_1((B)))**HR$

:$\frac{L+R}{2}T$

: Output $(4,1,L^{\text{'}\text{'}})$

: Output $(4,7,L)$

: Output $,"$R$")$

: Output $(5,7,R)$

: Output $(6,1,"$T$")$

: Output $(6,7,T)$

:$0M$

: $A+\frac{H}{2}x$

: For$($I$,1,$ N$)$

:$M+Y_1(x)M$

: $x+Hx$

: End

: $M**HM$

: Output $(7,1,"$M$")$

: Output $(7,7,M)$

: Output $(8,1,"$S$(2$N$)")$

: Output $(8,7,\frac{T+2**M}{3})$