50g multiple output

[nlj]

(12-04-2021 08:13 AM)oierpa Wrote:  If I try to calculate also total amount due (with formula M=R*A*12) nothing works.
...
<<"insert C t a"
{":C:
:t:
:A:"
{1 0 } V} INPUT OBJ-> -> C t A 'C*(t/100/12/(1-(1+t/100/12)^(-A*12)))' -> NUM "R" -> TAG 'R*A*12' -> NUM "M" -> TAG>>
but ressult it's wrong.
I'm sure is a syntax problem but I don' understand where.
Can someone help me?

Two apparent errors that immediately jump out from the code above are these:

1) The -> command creates local variables whose scope is limited to the following algebraic or program object. So by the time you get to the 'R*A*12' algebraic your local variables are gone and the A here refers to a global variable A.

2) You haven't assigned a value to R in your program. Presumably you intend R to to refer to the value you put on the stack that you labelled "R" with the TAG command, but the calculator doesn't know what you intend. (And again in 'R*A*12', R refers to a global variable R.)

You can fix Problem 1 by wrapping everything in a program object (with << and >>) from just before your first algebraic to the the end of the program.

I hope this helps.

N.

[Edited with slightly better English.]